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ASTM A479 Specification

Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts

Scope

ASTM A479 Specification covers high nickel, chromium, austenitic corrosion, and heat-resisting alloy materials 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.

Related Specifications of ASTM A479

A182 A276 A1082 A193 A194 A320 ASTM B473

ASTM A479 Chemical Requirements

UNS Designation Type Composition, % B
C Mn P S Si Cr Ni N Mo Other Elements C
Austenitic Grades
N08020 Alloy 20 0.07 2.00 0.045 0.035 1.00 19.0-21.0 32.0-38.0 . . . 2.00-3.00 Cu 3.0-4.0
Cb 8xC-1.00
N08367 . . . 0.030 2.00 0.040 0.030 1.00 20.0-22.0 23.5-25.5 0.18-0.25 6.0-7.0 Cu 0.75
N08800 800 0.10 1.50 0.045 0.015 1.00 19.0-23.0 30.0-35.0 . . . . . . FeK 39.5 min.
Cu 0.75
Al 0.15-0.60
Ti 0.15-0.60
N08810 800H 0.05-0.10 1.50 0.045 0.015 1.00 19.0-23.0 30.0-35.0 . . . . . . FeK 39.5 min. Cu 0.75 Al 0.15-0.60 Ti 0.15-0.60
N08811 . . . 0.06-0.10 1.50 0.045 0.015 1.00 19.0-23.0 30.0-35.0 . . . . . . FeK 39.5 min.
Cu 0.75
AlL 0.25-0.60 TiL 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 4.0-6.0 0.045 0.030 3.0-4.0 15.0-18.0 4.0-6.0 0.08-0.20 . . . . . .
S20910 XM-19 0.06 4.0-6.0 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 0.06 0.03 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 0.08D 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 1.40-2.00 20.0-22.0 10.0-12.0 0.14-0.20 . . . Ce 0.03-0.08
S30908 309S 0.08 2.00 0.045 0.030 1.00 22.0-24.0 12.0-15.0 . . . . . . . . .
S30909 309H 0.04-0.10 2.00 0.045 0.030 1.00 22.0-24.0 12.0-15.0 . . . . . . . . .
S30940 309Cb 0.08 2.00 0.045 0.030 1.00 22.0-24.0 12.0-16.0 . . . . . . Cb 10×C- 1.10
S30880 ER308E 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 . . . . . . . . .
S31010F . . . 0.030 5.50-6.50 0.030 0.0010 0.25-0.75 28.5-30.5 14.0-16.0 0.80-0.90 1.5-2.5 Al 0.05
B 0.005
S31040 310Cb 0.08 2.00 0.045 0.030 1.00 24.0-26.0 19.0-22.0 . . . . . . Cb 10×C-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
S31266 . . . 0.030 2.00-4.00 0.035 0.020 1.00 23.0-25.0 21.0-24.0 0.35-0.60 5.2-6.2 Cu 1.00-2.50 W 1.50-2.50
S31600 316 0.08C 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 5×(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 10×C- 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 0.08D 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . . . . Ti 5×(C+N)- 0.70G
S32109 321H 0.04-0.10 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . . . . Ti 4×(C+N)- 0.70G
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
Al 0.025
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 Cb 0.10
S34700 347 0.08D 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . . . . Cb 10×C-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 8×C-1.10
S34752 . . . 0.005-0.02 2.00 0.035 0.010 0.60 17.0-18.0 10.0-13.0 0.06.-0.12 0.02-1.20 Cu 2.50-3.50
Nb 0.20-0.50
Nb/C ration, min 15
B00.001-0.005
S34800 348 0.08D 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . . . . (Cb+Ta) 10×C-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) 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
S32750M . . . 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
S32760H . . . 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
S32808 . . . 0.030 1.10 0.030 0.010 0.50 27.0-27.9 7.0-8.2 0.30-0.40 0.80-1.2 W 2.10-2.50
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
S32950 . . . 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 × (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 × (C+N)-0.80
S44627 XM-27 0.010I 0.40 0.020 0.020 0.40 25.0-27.5 0.50 0.015I 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 J 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 . . . . . . . . .
  • A New designations established in accordance with Practice E527 and SAE J 1086 published jointly by ASTM and SAE. See ASTM DS56C.2
  • 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 UNS S31010 is a highly alloyed austenitic stainless steel type 3b as defined in NACE MR0175/ISO 15156-3.
  • G Nitrogen content is to be reported for this grade.
  • H % Cr + 3.3 × % (Mo + 1⁄2 W) + 16 × % N $ 41.
  • I Product analysis tolerance over the maximum limit for carbon and nitrogen to be 0.002 %.
  • J Wrought version of CA6NM.
  • K Iron shall be determined arithmetically by difference of 100 minus the sum of specified elements.
  • L (Al+Ti) 0.85-1.20.
  • M % Cr + 3.3 × % Mo + 16 × % N $ 41.

ASTM A479 Mechanical Requirements

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 stabilized-annealed 80 [550] 35 [240] 30D 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
S20161 . . . annealed 125 [860] 50 [345] 40 40 311
S20910 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 . . .
S31010 . . . annealed 110 [760] 75 [515] 40 50 330
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 . . .
S31266 . . . annealed 109 [750] 61 [420] 35 . . . . . .
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
S34752 . . . annealed 75 [515] 30 [205] 35 . . . . . .
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
Austenitic Grades
  over 2 in. annealed 110 [760] 75 [515] 15 . . . 310
S32760 . . . annealed 109 [750] 80 [550] 25 . . . 310
S32808 . . . annealed 101 [700] 72 [500] 15 . . . 310
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] 20I 45I 223
1 70 [485] 40 [275] 20I 45I 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
S41040 XM-30 annealed 70 [485] 40 [275] 13H 45H 235
quenched and tempered 125 [860] 100 [690] 13 45 302
  • A See Section 7.
  • 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] minimum permitted for extruded shapes.
  • G For bars greater than 2 in. [51 mm], a cross section, 60 ksi [415 MPa] minimum, shall be permitted.
  • H Elongation in 2 in. or 50 mm of 12 % minimum and reduction of area of 35 % minimum permitted for cold-finished bars.
  • I Elongation in 2 in. of 12 % minimum and reduction of area of 35 % minimum permitted for cold-drawn or cold-rolled bars.
  • J Annealed bars shall be capable of meeting the tempered condition requirements when heat treated.
 

ASTM A479 Heat Treatment

TypeA Heat Treatment TemperatureB
°F (°C), min		 Quenchant Hardness
HRC, min
ASTM A479 Type 403 1750 [955] Air 35
ASTM A479 Type 410 1750 [955] Air 35
ASTM A479 Type 414 1750 [955] Oil 42
  • A Samples for testing shall be in the form of a section not exceeding 3⁄8 in. [9.50 mm] in thickness.
  • B Temperature tolerance is ±25 °F [15 °C].

ASTM A479 Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM A479 Supplementary Requirements

S1 Materials for High-temperature Service
S2 Corrosion Tests
S3 Product Analysis
S4 Material for High Cycle Fatigue Service
S5 Material for Optimum Resistance to Stress Corrosion Cracking
S6 Demonstration of the Absence of Detrimental Intermetallic Phase in Austenitic and Austenitic-Ferritic (Duplex) Grades