ASTM_A959-2009不锈钢标准

Designation: A 959 – 09 Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels1 This standard is issued under the fixed designation A 959; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope* 1.1 This guide provides a guide to ASTM Subcommittees A01.06, A01.10, A01.17, A01.22, and A01.28 for specifying chemical composition limits of wrought stainless steels. It is intended that these recommended grade composition limits be suitable for adoption by other standardization bodies that prepare standards for stainless steel products. 1.2 Included in this guide are the recommendations for determining the number of significant figures for specifying chemical composition from Test Methods, Practices, and Ter- minology A 751. 1.3 All stainless steel UNS numbers and the stainless steel grades in all standards overseen by the aforementioned ASTM subcommittees have been included, except those grades appli- cable to restricted special end uses and alloys containing less than 10.5 % minimum chromium. 1.4 Not addressed are minor composition modifications which a specific product subcommittee may find necessary to accommodate effects of normal processing or to enhance fabricability by the producer or user, or both. 1.5 Also not generally addressed (except when established by ASTM product subcommittees) is a complete rationalization of all limits, especially when such would conflict with long- standing practices and is not justified by special technical effect. 1.6 Excluded from this guide are cast material and welding filler metal. 2. Referenced Documents 2.1 ASTM Standards:2 A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products E 527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS) 2.2 SAE Standards:3 J 1086 Recommended Practice for Numbering Metals and Alloys HS-1086 Metals and Alloys in the Unified Numbering System 3. Terminology 3.1 Definitions of Terms Specific to This Standard: 3.1.1 austenitic grade, n—metallurgical term meaning that the material is usually predominantly face-centered cubic in structure and hardenable only by cold working. 3.1.2 austenitic-ferritic (duplex) grade, n—metallurgical term meaning that the material is a mixture of austenitic and ferritic structures, with at least one-fourth of the lesser phase, and hardenable only by cold working. 3.1.3 ferritic grade, n—metallurgical term meaning that the material is body-centered cubic in structure (with little, if any, tempered martensite) and hardenable only slightly by cold working (responding little or only slightly to conventional heat treatment by quenching and tempering). 3.1.4 martensitic grade, n—metallurgical term meaning that the material is capable of being produced in a distorted body-centered cubic structure by conventional heat treating and quenching, and that the quenched structure is capable of conventional tempering. Martensitic grades are delivered in the annealed (ferritic) condition or the hardened and tempered (martensitic) condition. 3.1.5 precipitation hardening grade, n—metallurgical term meaning that the material may be basically austenitic or martensitic in structure and hardenable by precipitation hard- ening (sometimes called age hardening). 3.1.6 standard stainless steel grade, n—listed chemical composition associated with a stainless steel grade identified by a particular UNS number appearing in SAE publication HS-1086, except as modified by an ASTM subcommittee 1 This guide is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.17 on Flat-Rolled and Wrought Stainless Steel. Current edition approved March 15, 2009. Published April 2009. Originally approved in 1996. Last previous edition approved in 2007 as A 959 – 07. 2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website. 3 Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org. 1 *A Summary of Changes section appears at the end of this standard. Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States. having oversight of a wrought stainless steel product where such a modification is justified by a specific technical effect. 4. Significance and Use 4.1 It is anticipated that the ASTM Subcommittees A01.06, A01.10, A01.17, A01.22, and A01.28 will use the standard composition limits listed in this guide for the grades identified by the corresponding UNS designation in the product specifi- cation unless there is a specific technical justification for doing otherwise. The compositions in this guide shall not be consid- ered as chemical requirements for any particular product until adopted by the subcommittee overseeing that product. 4.2 Assuming that uniform compositions among the many product standards for stainless steel are desirable, the compo- sition limits provided in this standard are to be used as guides in determining limits for each of the elements included in the total composition of each grade. The composition limits have been established with the intent that each product subcommit- tee will find it necessary to require only a minimum number of changes to reflect specific technical effects. Section 5 lists the general guidelines followed for determining the limits for each element; the limits established in this guide are based on these guidelines. 4.3 Not included in this standard stainless steel grade harmonization effort is an attempt to unify stainless steel compositions in ASTM product standards by any means other than recognizing current industry practices. 5. General Guidelines Used for Determining Composition Limits 5.1 Carbon—It is recommended that limits be to only two decimal places for levels of 0.04 % and higher because it is not necessary to control to such precision at levels above 0.04 %. (It should be recognized that limits such as 0.045 % maximum may also be simply stated as 0.04 % maximum.) It is also recommended that three decimal places be used at levels of 0.030 % and lower, unless, for example, it is clearly recognized that 0.03 % maximum means that 0.035 % is satisfactory. 5.2 Manganese—Except for the Cr-Ni-Mn grades (S2XXXX), it is recommended that limits of 2 % maximum and 1 % maximum be used for the austenitic and other grades respectively, except for the free machining grades with high sulfur or selenium, or when necessary to promote nitrogen solubility. 5.3 Phosphorus—It is recommended that 0.045 % maxi- mum be applied to austenitic grades, and 0.040 % maximum to other grades unless the sponsoring producer recommends a lower limit for specific technical effect. Exception—some of the Cr-Ni-Mn austenitic grades have always been produced to 0.060 % maximum. 5.4 Sulfur—It is recommended that 0.030 % maximum be applied to all grades except the free-machining grades unless lower limits have been required for specific technical effects. 5.5 Silicon—Past practice has been to establish 0.75 % maximum for tubular related products such as flat rolled and tubulars, and 1.00 % maximum for long products and forgings. For grades produced both as long and flat-rolled products, 1 % maximum was chosen since it will also include products melted to lower limits. Use of lower or higher limits should be based on specific technical effect. 5.6 Chromium—A composition spread of 2 % is recom- mended; existing broader limits were not reduced to less than a 3 % spread. 5.7 Nickel—It is recommended that the composition spread not exceed 3 % unless a broader (generally higher) spread is justified by specific technical effect. 5.8 Molybdenum—It is recommended that the composition spread not exceed 1 %, unless a broader range is justified by specific technical effect. Molybdenum limits having only a maximum limit but no minimum should not be used unless justified by specific technical effect. 5.9 Nitrogen—It is recommended that nitrogen limits hav- ing only a maximum limit but no minimum should not be used unless justified by specific technical effect. 5.10 Copper—It is recommended that copper limits having only a maximum limit but no minimum should not be used unless justified by specific technical effect. 5.11 Columbium and Tantalum—Except for special appli- cations requiring positive identification of tantalum, it is recommended that prior listings of these two elements together be limited to listing only columbium. The words “columbium” and “niobium” refer to the same element. 6. Harmonized Standard Grade Stainless Steel Compositions 6.1 The harmonized composition limits are shown in Table 1, grouped by metallurgical classification, that is, austenitic, austenitic-ferritic, etc. Within those groups, grades are listed by UNS designation, in numerical order. 6.2 Unless adopted by the appropriate product subcommit- tee in a product standard, the compositions described in this guide shall not be used for specifying an ASTM product. 7. Keywords 7.1 austenitic stainless steels; austenitic-ferritic or ferritic- austenitic stainless steels; duplex stainless steels; ferritic stain- less steels; harmonized stainless steel compositions; martensi- tic stainless steels; precipitation hardening stainless steels; standard stainless steel grade compositions A 959 – 09 2 TABLE 1 Chemical Composition Limits, %A UNS DesignationB Type C Carbon Manganese Phos-phorus Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Copper Other Elements Austenitic Grades S16800 16-8-2HD 0.05–0.10 2.00 0.045 0.030 1.00 14.5–16.5 7.5–9.5 1.50–2.00 . . . . . . . . . S20100 201 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 . . . 0.25 . . . . . . S20103 201L 0.03 5.5–7.5 0.045 0.030 1.00 16.0–18.0 3.5–5.5 . . . 0.25 . . . . . . S20153 201LND 0.03 6.4–7.5 0.045 0.015 1.00 16.0–17.5 4.0–5.0 . . . 0.10–0.25 . . . Cu 1.00 S20161 . . . 0.15 4.0–6.0 0.045 0.030 3.0–4.0 15.0–18.0 4.0–6.0 . . . 0.08–0.20 . . . . . . S20162 . . . 0.15 4.0–8.0 0.040 0.040 2.5–4.5 16.5–21.0 6.0–10.0 0.50–2.50 0.05–0.25 . . . . . . S20200 202 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–6.0 . . . 0.25 . . . . . . S20300 XM-1E 0.08 5.0–6.5 0.045 0.18–0.35 1.00 16.0–18.0 5.0–6.5 . . . . . . . . . Cu 1.75–2.25 S20400 . . . 0.030 7.0–9.0 0.045 0.030 1.00 15.0–17.0 1.50–3.00 . . . 0.15–0.30 . . . . . . S20430 . . . 0.15 6.5–9.0 0.060 0.030 1.00 15.5–17.5 1.50–3.50 . . . 0.05–0.25 2.0–4.0 . . . S20500 205 0.12–0.25 14.0–15.0 0.060 0.030 1.00 16.5–18.0 1.00–1.75 . . . 0.32–0.40 . . . . . . S20910 XM-19E 0.06 4.0–6.0 0.045 0.030 1.00 20.5–23.5 11.5–13.5 1.50–3.00 0.20–0.40 . . . Cb 0.10–0.30, V 0.10–0.30 S21400 XM-31E 0.12 14.0–16.0 0.045 0.030 0.30–1.00 17.0–18.5 1.00 . . . 0.35 min . . . . . . S21460 XM-14E 0.12 14.0–16.0 0.060 0.030 1.00 17.0–19.0 5.0–6.0 . . . 0.35–0.50 . . . . . . S21500 . . . 0.06–0.15 5.5–7.0 0.045 0.030 0.2–1.0 14.0–16.0 9.0–11.0 0.80–1.20 . . . . . . Cb 0.75–1.25, V 0.15–0.40, B 0.003–0.009 S21600 XM-17E 0.08E 7.5–9.0 0.045 0.030 1.00 17.5–20.5 5.0–7.0 2.00–3.00 0.25–0.50 . . . . . . S21603 XM-18E 0.03E 7.5–9.0 0.045 0.030 1.00 17.5–20.5 5.0–7.0 2.00–3.00 0.25–0.50 . . . . . . S21800 . . . 0.10 7.0–9.0 0.060 0.030 3.5–4.5 16.0–18.0 8.0–9.0 . . . 0.08–0.18 . . . . . . S21900 XM-10E 0.08 8.0–10.0 0.045 0.030 1.00 19.0–21.5 5.5–7.5 . . . 0.15–0.40 . . . . . . S21904 XM-11E 0.04 8.0–10.0 0.045 0.030 1.00 19.0–21.5 5.5–7.5 . . . 0.15–0.40 . . . . . . S24000 XM-29E 0.08 11.5–14.5 0.060 0.030 1.00 17.0–19.0 2.3–3.7 . . . 0.20–0.40 . . . . . . S24100 XM-28E 0.15 11.0–14.0 0.045 0.030 1.00 16.5–19.0 0.50–2.50 . . . 0.20–0.45 . . . . . . S28200 . . . 0.15 17.0–19.0 0.045 0.030 1.00 17.0–19.0 . . . 0.75–1.25 0.40–0.60 . . . Cu 0.75–1.25 S30100 301 0.15 2.00 0.045 0.030 1.00 16.0–18.0 6.0–8.0 . . . 0.10 . . . . . . S30103 301LD 0.030 2.00 0.045 0.030 1.00 16.0–18.0 5.0–8.0 . . . 0.20 . . . . . . S30153 301LND 0.030 2.00 0.045 0.030 1.00 16.0–18.0 5.0–8.0 . . . 0.07–0.20 . . . . . . S30200 302 0.15 2.00 0.045 0.030 1.00 17.0–19.0 8.0–10.0 . . . 0.10 . . . . . . S30215 302B 0.15 2.00 0.045 0.030 2.00–3.00 17.0–19.0 8.0–10.0 . . . 0.10 . . . . . . S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0–19.0 8.0–10.0 . . . . . . . . . . . . S30310 XM-15E 0.15 2.5–4.5 0.20 0.25 min 1.00 17.0–19.0 7.0–9.0 . . . . . . . . . . . . S30323 303Se 0.15 2.00 0.20 0.06 1.00 17.0–19.0 8.0–10.0 . . . . . . . . . Se 0.15 min S30345 XM-2E 0.15 2.00 0.05 0.11–0.16 1.00 17.0–19.0 8.0–10.0 0.40–0.60 . . . . . . Al 0.60–1.00 S30400 304 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . . . . . . . . . . S30403 304L 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 . . . . . . . . . . . . S30409 304H 0.04–0.10 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . . . . . . . . . . S30415 . . . 0.04–0.06 0.80 0.045 0.030 1.00–2.00 18.0–19.0 9.0–10.0 . . . 0.12–0.18 . . . Ce 0.03–0.08 S30430 . . . 0.03 2.00 0.045 0.030 1.00 17.0–19.0 8.0–10.0 . . . . . . . . . Cu 3.0–4.0 S30432 . . . 0.07–0.13 0.50 0.045 0.030 0.30 17.0–19.0 7.5–10.5 . . . 0.05–0.12 2.5–3.5 Cb 0.20–0.60, Al 0.003–0.030, B 0.001–0.010 S30451 304N 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . 0.10–0.16 . . . . . . S30452 XM-21E 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–10.0 . . . 0.16–0.30 . . . . . . S30453 304LN 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . 0.10–0.16 . . . . . . S30454 304LHND 0.03 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 . . . 0.16–0.30 . . . . . . S30500 305 0.12 2.00 0.045 0.030 1.00 17.0–19.0 11.0–13.0 . . . . . . . . . . . . S30600 . . . 0.018 2.00 0.020 0.020 3.7–4.3 17.0–18.5 14.0–15.5 0.20 . . . . . . Cu 0.50 S30601 . . . 0.015 0.50–0.80 0.030 0.013 5.0–5.6 17.0–18.0 17.0–18.0 0.20 0.05 . . . Cu 0.35 S30615 . . . 0.16–0.24 2.00 0.030 0.030 3.2–4.0 17.0–19.5 13.5–16.0 . . . . . . . . . Al 0.80–1.50 S30800 308 0.08 2.00 0.045 0.030 1.00 19.0–21.0 10.0–12.0 . . . . . . . . . . . . S30815 . . . 0.05–0.10 0.80 0.040 0.030 1.40–2.00 20.0–22.0 10.0–12.0 . . . 0.14–0.20 . . . Ce 0.03–0.08 S30900 309 0.20 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 . . . . . . . . . . . . S30908 309S 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 . . . . . . . . . . . . S30909 309HD 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 . . . . . . . . . . . . S30940 309CbD 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 Cb 10xC-1.10 S30941 309HCbD 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 . . . . . . . . . Cb 10xC-1.10 S31000 310D 0.25 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 . . . . . . . . . ... S31002 . . . 0.015 2.00 0.020 0.015 0.15 24.0–26.0 19.0–22.0 0.10 0.10 . . . . . . S31008 310S 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . . . . . . . . . . . . S31009 310HD 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . . . . . . . . . . . . S31040 310CbD 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . . . . . . . . . Cb 10xC-1.10 S31041 310HCbD 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . . . . . . . . . Cb 10xC-1.10 S31042 310HCbND 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . . . 0.15–0.35 . . . Cb 0.20–0.60 S31050 310MoLND 0.030 2.00 0.030 0.015 0.40 24.0–26.0 21.0–23.0 2.00–3.00 0.10–0.16 . . . S31254 . . . 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.22 . . . Cu 0.50–1.00 S31266 . . . 0.030 2.0–4.0 0.035 0.020 1.00 23.0–25.0 21.0–24.0 5.2–6.2 0.35–0.60 1.00–2.50 W 1.50–2.50 S31272 . . . 0.08–0.12 1.50–2.00 0.030 0.015 0.30–0.70 14.0–16.0 14.0–16.0 1.00–1.40 . . . . . . Ti 0.30–0.60, B 0.004–0.008 S31400 314D 0.25 2.00 0.045 0.030 1.50–3.00 23.0–26.0 19.0–22.0 . . . . . . . . . . . . A 959 – 09 3 TABLE 1 Continued UNS DesignationB Type C Carbon Manganese Phos-phorus Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Copper Other Elements S31600 316 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 . . . . . . . . . S31603 316L 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 . . . . . . . . . S31609 316H 0.04–0.10 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 . . . . . . . . . S31635D 316Ti 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10 . . . Ti 5x(C+N)-0.70 S31640D 316Cb 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10 . . . Cb 10xC-1.10 S31651 316N 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.10–0.16 . . . . . . S31653 316LN 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.10–0.16 . . . . . . S31654 316LHND 0.03 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.16–0.30 . . . . . . S31700 317 0.08 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 . . . . . . . . . S31703 317LD 0.030 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 . . . . . . . . . S31725 317LM 0.030 2.00 0.045 0.030 1.00 18.0–20.0 13.5–17.5 4.0–5.0 0.20 . . . . . . S31726 317LMN 0.030 2.00 0.045 0.030 1.00 17.0–20.0 13.5–17.5 4.0–5.0 0.10–0.20 . . . . . . S31727 . . . 0.030 1.00 0.030 0.030 1.00 17.5–19.0 14.5–16.5 3.8–4.5 0.15–0.21 2.8–4.0 . . . S31753 317LND 0.030 2.00 0.045 0.030 1.00 18.0–20.0 11.0–14.0 3.0–4.0 0.10–0.22 . . . . . . S32050 . . . 0.030 1.50 0.035 0.020 1.00 22.0–24.0 20.0–23.0 6.0–6.8 0.21–0.32 0.40 . . . S32053 . . . 0.030 1.00 0.030 0.010 1.00 22.0–24.0 24.0–26.0 5.0–6.0 0.17–0.22 . . . . . . S32100 321 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . 0.10 . . . Ti 5x(C+N)-0.70 S32109 321H 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . 0.10 . . . Ti 4x(C+N)-0.70 S32615 . . . 0.07 2.00 0.045 0.030 4.8–6.0 16.5–19.5 19.0–22.0 0.30–1.50 . . . . . . Cu 1.50–2.50 S32654 . . . 0.020 2.0–4.0 0.030 0.005 0.50 24.0–25.0 21.0–23.0 7.0–8.0 0.45–0.55 . . . Cu 0.30–0.60 S33228 . . . 0.04–0.08 1.00 0.020 0.015 0.30 26.0–28.0 31.0–33.0 . . . . . . . . . Cb 0.60–1.00, Al 0.025, Ce 0.05–0.10 S33400 334D 0.08 1.00 0.030 0.015 1.00 18.0–20.0 19.0–21.0 . . . . . . . . . Al 0.15–0.60 Ti 0.15–0.60 S34565 . . . 0.030 5.0–7.0 0.030 0.010 1.00 23.0–25.0 16.0–18.0 4.0–5.0 0.40–0.60 . . . Cb 0.10 S34700 347 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . . . . . . . Cb 10xC-1.10 S34709 347H 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . . . . . . . Cb 8xC-1.10 S34751 . . . 0.015 2.00 0.020 0.030 0.75 17.0–20.0 9.0–13.0 . . . 0.06–0.10 . . . Cb 0.20-0.50 S34800 348 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . . . . . . . Cb+Ta-10xC- 1.10, Ta 0.10, Co 0.20 S34809 348H 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 . . . . . . . . . Cb+Ta 8xC- 1.10, Ta 0.10, Co 0.20 S35045 . . . 0.06–0.10 1.50 0.045 0.015 1.00 25.0–29.0 32.0–37.0 . . . . . . 0.75 Al 0.15–0.60 Ti 0.15–0.60 S35125 . . . 0.10 1.00–1.50 0.045 0.015 0.50 20.0–23.0 31.0–35.0 2.00–3.00 . . . . . . Cb 0.25–0.60 S35315 . . . 0.04–0.08 2.00 0.045 0.030 1.20–2.00 24.0–26.0 34.0–36.0 . . . 0.12–0.18 . . . Ce 0.03–0.10 S38100 XM-15E 0.08 2.00 0.030 0.030 1.50–2.50 17.0–19.0 17.5–18.5 . . . . . . . . . . . . S38400 . . . 0.04 2.00 0.045 0.030 1.00 15.0–17.0 17.0–19.0 . . . . . . . . . . . . S38815 . . . 0.030 2.00 0.045 0.020 5.5–6.5 13.0–15.0 15.0–17.0 0.75–1.50 . . . 0.75–1.50 Al 0.30 S66220 622D 0.08 1.50 0.040 0.030 1.00 12.0–15.0 24.0–28.0 2.5–3.5 . . . . . . Cu 0.50, Ti 1.55–2.00, Al 0.35, B 0.001–0.010 S66286 . . . 0.08 2.00 0.040 0.030 1.00 13.5–16.0 24.0–27.0 1.00–1.50 . . . . . . Ti 1.90–2.35, Al 0.35, V 0.10–0.50, B 0.003–0.010 N08020 . . . 0.07 2.00 0.045 0.035 1.00 19.0–21.0 32.0–38.0 2.00–3.00 . . . 3.0–4.0 Cb 8xCmin; 1.00 max N08367 . . . 0.030 2.00 0.040 0.030 1.00 20.0–22.0 23.5–25.5 6.0–7.0 0.18–0.25 . . . Cu 0.75 N08700 . . . 0.04 2.00 0.040 0.030