ASTM A479 Specification

This specification2 covers hot- and cold-finished bars of stainless steel, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels for use in boiler and pressure vessel construction.

Chemical Composition

UNS DesignationA
Type		 Composition,%
Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Nitrogen Molybdenum Other ElementsC
Austenitic Grades
N08810 800H 0.0S-0.10 1.50 0.045 O.015 1.00 19.0-23.0 30.0-35.0 ... ... FeJ 39.5 min.
Cu 0.75
Al 0.15-0.60
Ti 0.1S-0.60
N08811 ... 0.06--0.10 1.50 0.045 O.o15 1.00 19.0-23.0 30.o-35.0 ... ... FeJ 39.5 min.
Cu 0.75
AIK 0.25-0.60
TiK 0.25--0.60
N08700 ... 0.040 2.00 0.040 0.030 1.00 19.0-23.0 24.0-26.0 ... 4.3-5.0 Cu 0.50; Cb 8xC-0.40
N08904 904L 0.020 2.00 0.045 0.035 1.00 19.0-23.0 23.0-28.0 0.10 4.0-5.0 Cu 1.0-2.0
N08925 ... 0.020 1.00 0.045 0.030 0.50 19.0-21.0 24.0-26.0 0.10-0.20 6.0-7.0 Cu 0.80-1.50
N08926 ... 0.020 2.00 0.030 0.010 0.50 19.0-21.0 24.0-26.0 0.15-0.25 6.0-7.0 Cu 0.50-1.50
S20161 ... 0.15 4.0-S.O 0.045 0.030 3.o-4.0 15.0-18.0 4.0-S.O 0.08-0.20 ... ...
S20910 XM-19 0.06 4.0-S.O 0.045 0.030 1.00 20.5-23.5 11.5-13.5 0.20-0.40 1.50-3.00 Cb 0.10-0.30; v 0.10-0.30
S21600 XM-17 0.08 7.5-9.0 0.045 0.030 1.00 17.5-20.5 5.0-7.0 0.25-0.50 2.00-3.00 ...
S21603 XM-18 0.03 7.5-9.0 0.045 0.030 1.00 17.5-20.5 5.0-7.0 0.25-0.50 2.00-3.00 ...
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 ... ...
S21904 XM-11 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-29 0.08 11.5-14.5 0.060 0.030 1.00 17.0-19.0 2.3-3.7 0.20-0.40 ... ...
S30200 302 0.15 2.00 0.045 0.030 1.00 17.0-19.0 8.0-10.0 0.10 ... ...
S30400 304 0.08° 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 ... ... ...
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 8.0-10.5 ... ... ...
S30451 304N 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-12.0 0.10-0.16 ... ...
S30453 304LN 0.030 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 0.10-0.16 ... ...
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
S30815 ... 0.05--0.10 0.80 0.040 0.030 1.4Q-2.00 20.0-22.0 10.0-12.0 0.14-0.20 ... Ce 0.03--0.08
S30880 ER308" 0.08 1.00-2.50 0.030 0.030 0.25-0.60 19.5-22.0 9.0-11.0 ... ... ...
S31008 310S 0.08 2.00 0.045 0.030 1.00 24.0-26.0 19.0-22.0 ... ... ...
S31009 310H 0.04-0.10 2.00 0.045 0.030 1.00 24.0-26.0 19.0-22.0 ... ... ...
S31040 310Cb 0.08 2.00 0.045 0.030 1.00 24.0-26.0 19.0-22.0 ... ... Cb  10xC-1.10
S31050 ... 0.025 2.00 0.020 0.015 0.4 24.0-26.0 20.5-23.5 0.09-0.15 1.60-2.60 ...
S31254 ... 0.020 1.00 0.030 0.010 0.80 19.5-20.5 17.5-18.5 0.18-0.25 6.0-6.5 Cu 0.50-1.00
S31600 316 o.o8c 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 ...
S31635 316Ti 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 0.10 2.00-3.00 Ti  5x(C+N)·0.70
S31640 316Cb 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 0.10 2.00-3.00 Cb  1OxC·1.10
S31651 316N 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 0.10-0.16 2.00-3.00 ...
S31653 316LN 0.030 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 0.10-0.16 2.00-3.00 ...
S31700 317 0.08 2.00 0.045 0.030 1.00 18.0-20.0 11.0-15.0 ... 3.0-4.0 ...
S31725 ... 0.030 2.00 0.045 0.030 1.00 18.0-20.0 13.5-17.5 0.20 4.0-5.0 ....
S31726 ... 0.030 2.00 0.045 0.030 1.00 17.0-20.0 14.5-17.5 0.10-0.20 4.0-5.0 ...
S31727 ... 0.030 1.00 0.030 0.030 1.00 17.5-19.0 14.5-16.5 0.15-0.21 3.8-4.5 Cu 2.8-4.0
S32050 ... 0.030 1.50 0.035 0.020 1.00 22.0-24.0 20.0-23.0 0.21-0.32 6.0-6.8 Cu 0.40
S32053 ... 0.030 1.00 0.030 0.010 1.00 22.0-24.0 24.0-26.0 0.17-0.22 5.0-6.0 ...
S32100 321 0.08° 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 ... ... Ti  5x(C+N)·0.70F
S32109 321H 0.04-0.10 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 ... ... Ti  4x(C+N)·0.70F
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 0.45-0.55 7.0-8.0 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;
Ce 0.05-0.10;
S34565 ... 0.030 5.0-7.0 0.030 0.010 1.00 23.0-25.0 16.0-18.0 0.40-0.60 4.0-5.0 Al 0.025
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
S34800 348 0.08° 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 ... ... (Cb+Ta) 1OxC-1.1O;
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) 8×C–1.10; Co 0.20; Ta 0.10
S35315 . . . 0.04–0.08 2.00 0.040 0.030 1.20–2.00 24.0–26.0 34.0–36.0 0.12–0.18 . . . Ce 0.03–0.08
S38815 . . . 0.030 2.00 0.040 0.020 5.50–6.50 13.0–15.0 15.0–17.0 . . . 0.75–1.50 Al 0.30; Cu 0.75–1.50
Austenitic-Ferritic Grades
S31803 ... 0.030 2.00 0.030 0.020 1.00 21.0-23.0 4.5-6.5 0.08-0.20 2.5-3.5 ...
S32101 ... 0.040 4.0-6.0 0.040 0.030 1.00 21.0-22.0 1.35-1.70 0.20-0.25 0.10-0.80 Cu 0.10-0.80
S32202 ... 0.030 2.00 0.040 0.010 1.00 21.5-24.0 1.00-2.80 0.18-0.26 0.45 ...
S32205 ... 0.030 2.00 0.030 0.020 1.00 22.0-23.0 4.5-6.5 0.14-0.20 3.0-3.5 ...
S32506 ... 0.030 1.00 0.040 0.015 0.90 24.0-26.0 5.5-7.2 0.08-0.20 3.0-3.5 w 0.05-0.30
S32550 ... 0.04 1.50 0.040 0.030 1.00 24.0-27.0 4.5-6.5 0.10-0.25 2.9-3.9 Cu 1.50-2.50
S32750 ... 0.030 1.20 0.035 0.020 0.80 24.0-26.0 6.0-8.0 0.24-0.32 3.0-5.0 Cu 0.50
S32760G ... 0.030 1.00 0.030 0.010 1.00 24.0-26.0 6.0-8.0 0.20-0.30 3.0-4.0 Cu 0.50-1.00;W 0.50-1.00
S32906 ... 0.030 0.80-1.50 0.030 0.030 0.50 28.0-30.0 5.8-7.5 0.30-0.40 1.50-2.60 Cu 0.80
832950 ... 0.03 2.00 0.035 0.010 0.60 26.0-29.0 3.5-5.2 0.15-0.35 1.00-2.50 ...
S39277 ... 0.025 0.80 0.025 0.002 0.80 24.0-26.0 6.5-8.0 0.23-0.33 3.0-4.0 Cu 1.20-2.00 w 0.80-1.20
S82441 . . . 0.030 2.5–4.0 0.035 0.005 0.70 23.0–25.0 3.0–4.5 0.20–0.30 1.00–2.00 Cu 0.10–0.80
Ferritic Grades
S40500 405 0.08 1.00 0.040 0.030 1.00 11.5-14.5 0.50 ... .. Al  0.10-0.30
S43000 430 0.12 1.00 0.040 0.030 1.00 16.0-18.0 ... ... ... ...
S43035 439 0.07 1.00 0.040 0.030 1.00 17.0-19.0 0.50 0.04 ... TI 0.20 + 4 x (C+N) -1.10; Al 0.15
S44400 444 0.025 1.00 0.040 0.030 1.00 17.5-19.5 1.00 0.035 1.75-2.50 (Ti+Cb) 0.20 + 4 x (C+N)-0.80
S44627 XM-27 0.010H 0.40 0.020 0.020 0.40 25.0-27.5 0.50 o.015H 0.75-1.50 Cu 0.20;
Cb 0.05-0.20;(Ni+Cu) 0.50
S44700   0.010 0.30 0.025 0.020 0.20 28.0-30.0 0.15 0.020 3.5-4.2 (C+N) 0.025;Cu 0.15
S44800   0.010 0.30 0.025 0.020 0.20 28.0-30.0 2.00-2.50 0.020 3.5-4.2 (C+N) 0.025; Cu 0.15
Martensitic Grades
S40300 403 0.15 1.00 0.040 0.030 0.50 11.5–13.0 ... ... ... ...
S41000 410 0.15 1.00 0.040 0.030 1.00 11.5–13.5 ... ... ... ...
S41040 XM-30 0.18 1.00 0.040 0.030 1.00 11.5–13.5 ... ... ... Cb 0.05–0.30
S41400 414 0.15 1.00 0.040 0.030 1.00 11.5–13.5 1.25–2.50 ... ... ...
S41425 ... 0.05 0.50–1.00 0.020 0.005 0.50 12.0–15.0 4.0–7.0 0.06–0.12 1.50–2.00 Cu 0.30
S41500 ... 0.05 0.50–1.00 0.030 0.030 0.60 11.5–14.0 3.5–5.5 ... 0.50–1.00 ...
S43100 431 0.20 1.00 0.040 0.030 1.00 15.0–17.0 1.25–2.50 ... ... ...
Note:

A. New designations established in accordance with Practice E527 and SAE J 1086 published jointly by ASTM and SAE. See ASTM DS–56C, available from ASTM Headquarters.
B. Maximum unless otherwise indicated.
C. Except as required for specific alloy type, molybdenum, titanium, nickel, cobalt, tantalum, nitrogen, and copper need not be reported but shall not be present in other than residual amounts, the intent being to prohibit substitution of one alloy type for another due to absence of control of the above named elements in certain alloys.
D. See Supplementary Requirement S1.
E. American Welding Society designation.
F. Nitrogen content is to be reported for this grade.
G. % Cr + 3.3 × % Mo + 16 × % N $ 40.
H. Product analysis tolerance over the maximum limit for carbon and nitrogen to be 0.002 %.
I. Wrought version of CA6NM.
J. Iron shall be determined arithmetically by difference of 100 minus the sum of specified elements.
K. (Al+Ti) 0.85–1.20.

Mechanical Properties

UNS Designation Type Condition Tensile Strength, min, ksi [MPa] Yield Strength,A min, ksi [MPa] Elongation in 2 in. [50 mm] or 4D, min, % Reduction of Area, min, %B,C Brinell Hardness, max
Austenitic Grades
N08020 Alloy 20 stabilzed- annealed 80 [550] 35 [240] 30° 50 ...
Up to 2 in. [50.8 mm], incl strain-hardened 90 [620] 60 [415] 15 40 ...
N08367 annealed 95 [655] 45 [310] 30 ... 241
N08800 800 annealed 75 [515] 30 [205] 30 ... 192
N08810 800H annealed 65 [450] 25 [170] 30 ... 192
N08811 annealed 65 [450] 25 [170] 30 ... 192
N08700 annealed 80 [550] 35 [240] 30 50 ...
N08904 904L annealed 71 [490] 31 [220] 35 ... ...
N08925 annealed 87 [600] 43 [295] 40 ... 217
N08926 annealed 94 [650] 43 [295] 35 ... 256
820161 annealed 125 [860] 50 [345] 40 40 311
820910 XM-19 annealed 100 [690] 55 [380] 35 55 293
Up to 2 in. [50.8 mm], incl hot-rolled 135 [930] 105 [725] 20 50 ...
Over 2 to 3 in. [50.8 to 76.2 mm], incl hot-rolled 115 [795] 75 [515] 25 50 ...
  Over 3 to 8 in. [76.2 to 203.2 mm], incl hot-rolled 100 [690] 60 [415] 30 50 ...
  Up to 11⁄2 in. [38.1 mm], incl strain-hardened 145 [1000] 125 [860] 12 40 ...
  Over 11⁄2 to 21⁄4 in. [38.1 to 57.2 mm], incl strain-hardened 120 [825] 105 [725] 15 45 ...
S21600, S21603 XM-17, XM-18 annealed 90 [620] 50 [345] 40 50 212
S21800 . . . annealed 95 [655] 50 [345] 35 55 241
S21904 XM-11 annealed 90 [620] 50 [345] 45 60 ...
S24000 XM-29 annealed 100 [690] 55 [380] 30 50 ...
S30200, S30400, S30409, S30453, S30880, S30908, S30909, S30940, S31008, S31009, S31040, S31600, S31609, S31635, S31640, S31653, S31700, S32100,S32109, S34700, S34709,S34800, S34809 , S30403, S31603 302, 304, 304H, 304LN, ER308,E 309S, 309H, 309Cb, 310S, 310H, 310Cb, 316, 316H, 316Ti, 316Cb, 316LN, 317, 321, 321H, 347, 347H, 348, 348H annealed 75 [515]F 30 [205] 30 40 ...
  316, 316L 304, 304L strain-hardened level 1 85 [585] 65 [450]G 30 60 ...
  2 in. and under strain-hardened level 2 95 [655] 75 [515] 25 40 ...
  Over 2 to 21⁄2 in. [50.8 to 63.5 mm], incl. strain-hardened level 2 90 [620] 65 [450] 30 40 ...
  Over 21⁄2 to 3 in. [63.5 to 76.2 mm], incl strain-hardened level 2 80 [550] 55 [380] 30 40 ...
S30403,S31603 304L,316L annealed 70 [485] 25 [170] 30 40 ...
S30451,S31651 304N,316N annealed 80 [550] 35 [240] 30 40 ...
S30600 ... annealed 78 (540) 35 (240) 40 ... ...
S30815 ... annealed 87 (600) 45 [310) 40 50 ...

S31050		 0.25 in. [6 mm) and under annealed 84 (580] 39 [270) 25 40 ...
Over 0.25 in. [6 mm) annealed 78 [540) 37 [255) 25 40 ...
S31254 ... annealed 95 [655] 44 [305] 35 50 ...
S31725 ... annealed 75 [515] 30 [205] 40 ... ...
S31726 ... annealed 80 [550] 35 [240] 40 ... ...
S31727 ... annealed 80 [550) 36 [245) 35 ... 217
S32050 ... annealed 98 [675) 48 [330) 40 ... ...
S32053 ... annealed 93 [640) 43 [295) 40 ... 217
S32615 ... annealed 80 [550) 32 [220) 25 40 ...
S32654 ... annealed 109 [750] 62 [430) 40 40 250
S33228 ... annealed 73 [500] 27 [185] 30 ... ...
S34565 ... annealed 115 [795) 60 [415] 35 40 230
S35315 ... annealed 94 [650] 39 [270] 40 ... ...
S38815 ... annealed            78 [540) 37 (255]_ 30 ... ...
Austenitic-Ferritic Grades
S31803   annealed  90  [620] 65 [450] 25 ... 290
S32101   annealed 94 [650] 65 [450] 30 ... 290
S32202   annealed 94 [650] 65 [450] 30 ... 290
S32205   annealed 95  [655] 65 [450] 25 ... 290
S32506   annealed 90 [620] 65 [450] 18 ... 302
S32550   annealed 110 [760] 80 [550] 15 ... 297
S32750 2 in.and under annealed 116 [800] 80 [550] 15 ... 310
over 2 in. annealed 110 [760] 75 [515] 15 ... 310
S32760   annealed 109 [750] 80 [550] 25 ... 300
S32906   annealed 109 [750] 80 [550] 25 ... 310
S32950   annealed 100[690] 70 [485] 15 ... 297
S39277 . . . annealed 118 [820] 85 [585] 25 50 293
S82441 Under 7/16 in. [11 mm] annealed 107 [740] 78 [540] 25 . . . 290
S82441 7/16 in. and over [11 mm] annealed 99 [680] 70 [480] 25 . . . 290
Ferritic Grades
S40500 405 annealed 60 [415] 25 [170] 20 45 207
S43000,S43035 430, 439 annealed 70 [485] 40 [275] 20H 45H 192
S44627 XM-27 annealed 65 [450] 40 [275] ... 45H 217
S44401 ... annealed 60 [415] 45 [310] 20I 45I 217
S44700 ... annealed 70 [485] 55 [380] 20 40 ...
S44800 ... annealed 70 [485] 55 [380] 20 40 ...
Martensitic Grades
S40300, S41000 403, 410 annealed 70 [485] 40 [275] 201 451 223
... ... 1 70 [485] 40 [275] 201 451 223
... ... 2 110 [760] 85 [585] 15 45 269
... ... 3 130 [895] 100 [690] 12 35 331
S41400 414 tempered 115 [795] 90 [620] 15 45 321
S41425 ... tempered 120 [825] 95 [655] 15 45 321
S41500 ... normalized and tempered 115 [795] 90 [620] 15 45 293
S43100 431J annealed ... ... ... ... 277
... tempered 115 [795] 90 [620] 15 45 321
841040 XM-30 annealed 70 [485] 40 [275] 13H 45H 235
... ... quenched and tempered 125 [860] 100 [690] 13 45 302
Note:

B. Reduction of area does not apply on flat bars 3⁄16 in. [4.80 mm] and under in thickness, as this determination is not generally made in this product size.
C. The material shall be capable of meeting the required reduction of area where listed, but actual measurement and reporting of the reduction of area are not required unless specified in the purchase order.
D. Cold-finished shapes require only 15 %, minimum, elongation.
E. American Welding Society designation.
F. Tensile strength 70 ksi [485 MPa] min permitted for extruded shapes.
G. For bars greater than 2 in. [51 mm], a cross section, 60 ksi [415 MPa] min, shall be permitted. H Elongation in 2 in. or 50 mm of 12 % min and reduction of area of 35 % min permitted for cold-finished bars. I Elongation in 2 in. of 12 % min and reduction of area of 35 % min permitted for cold-drawn or cold-rolled bars. J Annealed bars shall be capable of meeting the tempered condition requirements when heat treated.