Mechanical Properties of Austenitic Stainless Steels

Minimum room-temperature tensile and yield strength, elongation, reduction in area and hardness for the wrought austenitic stainless steels, quoted for each product form and condition with the ASTM specification that carries the requirement. A minimum is the floor a heat has to clear, so a certificate usually shows more.

The minimum values each product form and condition is required to meet, with the ASTM specification that carries the requirement. Table 7 of the source.

TypeUNSFormConditionTensile
MPa		Tensile
ksi		Yield 0.2%
MPa		Yield 0.2%
ksi		Elong.
%		Red. of
area, %		Hardness
HRB		ASTM
Type 301S30100BAnnealed620902053040—95 maxA 666
Type 301S30100B, P, Sh, StAnnealed515752053040—92 maxA 167
Type 301S30100B, P, Sh, St1/4 hard8601255157525——A 666
Type 301S30100B, P, Sh, St1/2 hard103015076011018——A 666
Type 301S30100B, P, Sh, St3/4 hard121017593013512——A 666
Type 301S30100B, P, Sh, StFull hard12801859651409——A 666
Type 302S30200B, FHot finished and annealed51575205304050—A 276, A 473
Type 302S30200BCold finished(b) and annealed62090310453040—A 276
Type 302S30200BCold finished(c) and annealed51575205303040—A 276
Type 302S30200WAnnealed515752053035(d)50(d)—A 580
Type 302S30200WCold finished620903104530(d)40—A 580
Type 302S30200P, Sh, StAnnealed515752053040—92 maxA 167, A 240, A 666
Type 302S30200B, P, Sh, StHigh tensile, 1/4 hard8601255157510——A 666
Type 302S30200B, P, Sh, StHigh tensile, 1/2 hard103015076011010——A 666
Type 302S30200B, P, Sh, StHigh tensile, 3/4 hard12051759301356——A 666
Type 302S30200B, P, Sh, StFull hard12751859651404——A 666
Type 302BS30215B, FHot finished and annealed51575205304050—A 276, A 473
Type 302BS30215BCold finished(b) and annealed62090310453040—A 276
Type 302BS30215BCold finished(c) and annealed51575205303040—A 276
Type 302BS30215WAnnealed515752053035(d)50(d)—A 580
Type 302BS30215WCold finished620903104530(d)40—A 580
Type 302BS30215P, Sh, StAnnealed515752053040—95 maxA 167
Type 302CuS30430W(e)Annealed55080—————A 493
Type 302CuS30430W(e)Lightly drafted58585—————A 493
Types 303 and 303SeS30300, S30323FAnnealed51575205304050—A 473
Types 303 and 303SeS30300, S30323WAnnealed585–86085–125—————A 581
Types 303 and 303SeS30300, S30323WCold worked790–1000115–145—————A 581
Type 304S30400B, F(f)Hot finished and annealed51575205304050—A 276, A 473
Type 304S30400BCold finished(b) and annealed62090310453040—A 276
Type 304S30400BCold finished(c) and annealed51575205303040—A 276
Type 304S30400WAnnealed515752053035(d)50(d)—A 580
Type 304S30400WCold finished620903104530(d)40—A 580
Type 304S30400P, Sh, StAnnealed515752053040—92 maxA 167
Type 304S30400B, P, Sh, St1/8 hard6901003805535——A 666
Type 304S30400B, P, Sh, St1/4 hard8601255157510——A 666
Type 304S30400B, P, Sh, St1/2 hard10351507601107——A 666
Type 304LS30403FAnnealed45065170254050—A 473
Type 304LS30403BHot finished and annealed48070170254050—A 276
Type 304LS30403BCold finished(b) and annealed62090310453040—A 276
Type 304LS30403BCold finished(c) and annealed48070170253040—A 276
Type 304LS30403WAnnealed480701702535(d)50(d)—A 580
Type 304LS30403WCold finished620903104530(d)40—A 580
Type 304LS30403P, Sh, StAnnealed480701702540—88 maxA 167, A 240
Type 304B4S30424P, Sh, St grade AAnnealed515752053027—95 maxA 887
Type 304B4S30424P, Sh, St grade BAnnealed515752053016—95 maxA 887
Type 305S30500B, FHot finished and annealed51575205304050—A 276, A 473
Type 305S30500BCold finished(b) and annealed26090310453040—A 276
Type 305S30500BCold finished(c) and annealed51575205303040—A 276
Type 305S30500WAnnealed515752053035(d)50(d)—A 580
Type 305S30500WCold finished620903104530(d)40—A 580
Type 305S30500P, Sh, StAnnealed480701702540—88 maxA 167
Type 305S30500B, WHigh tensile(d)1690245——————
Cronifer 18-15 LCSiS30600P, Sh, StAnnealed540782403540——A 167, A 240
Type 308S30800B, FHot finished and annealed51575205304050—A 276, A 473
Type 308S30800BCold finished(b) and annealed62090310453040—A 276
Type 308S30800BCold finished(c) and annealed51575205303040—A 276
Type 308S30800WAnnealed515752053035(d)50(d)—A 580
Type 308S30800WCold finished620903104530(d)40—A 580
Type 308S30800P, Sh, StAnnealed515752053040—88 maxA 167
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008B, FHot finished and annealed51575205304050—A 276, A 473
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008BCold finished(b) and annealed62090310453040—A 276
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008BCold finished(c) and annealed51575205303040—A 276
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008WAnnealed515752053035(d)50(d)—A 580
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008WCold finished620903104530(d)40—A 580
Types 309, 309S, 310 and 310SS30900, S30908, S31000, S31008P, Sh, StAnnealed515752053040—95 maxA 167
310CbS31040P, Sh, StAnnealed515752053040—95A 167, A 240
310CbS31040B, ShapesHot finished and annealed51575205304050—A 276
310CbS31040B, ShapesCold finished(b) and annealed62090310453040—A 276
310CbS31040B, ShapesCold finished(c) and annealed51575205303040—A 276
310CbS31040WAnnealed515752053035(d)50(d)—A 580
310CbS31040WCold finished620903104530(d)40—A 580
Type 314S31400B, FHot finished and annealed51575205304050—A 276, A 473
Type 314S31400BCold finished(b) and annealed62090310453040—A 276
Type 314S31400BCold finished(c) and annealed51575205303040—A 276
Type 314S31400WAnnealed515752053035(d)50(d)—A 580
Type 314S31400WCold finished620903104530(d)40—A 580
Type 316S31600B, F(f)Hot finished and annealed51575205304050—A 276, A 473
Type 316S31600BCold finished(b) and annealed62090310453040—A 276
Type 316S31600BCold finished(c) and annealed51575205303040—A 276
Type 316S31600WAnnealed515752053035(d)50(d)——
Type 316S31600WCold finished620903104540(d)40—A 580
Type 316S31600P, Sh, StAnnealed515752053040—95 maxA 167, A 240
Type 316LS31603FAnnealed45065170254050—A 473
Type 316LS31603BHot finished and annealed48070170254050—A 276
Type 316LS31603BCold finished(b) and annealed62090310453040—A 276
Type 316LS31603BCold finished(c) and annealed48070170253040—A 276
Type 316LS31603WAnnealed480701702535(d)50(d)—A 580
Type 316LS31603WCold finished620903104530(d)40—A 580
Type 316LS31603P, Sh, StAnnealed485701702540—95 maxA 167, A 240
Type 316CbS31640P, Sh, StAnnealed515752053030—95A 167, A 240
Type 316CbS31640B, ShapesHot finished and annealed51575205304050—A 276
Type 316CbS31640B, ShapesCold finished(b) and annealed62090310453040—A 276
Type 316CbS31640B, ShapesCold finished(c) and annealed51575205303040—A 276
Type 316CbS31640WAnnealed515752053035(d)50(d)—A 580
Type 316CbS31640WCold finished620903104530(d)40—A 580
Type 317S31700B, FHot finished and annealed51575205304050—A 276, A 473
Type 317S31700BCold finished(b) and annealed62090310453040—A 276
Type 317S31700BCold finished(c) and annealed51575205303040—A 276
Type 317S31700WAnnealed515752053035(d)50(d)—A 580
Type 317S31700WCold finished620903104530(d)40—A 580
Type 317S31700P, Sh, StAnnealed515752053035—95 maxA 167, A 240
Type 317LS31703BAnnealed585(g)85(g)240(g)35(g)55(g)65(g)85 max(g)—
Type 317LS31703P, Sh, StAnnealed515752053040—95 maxA 167
Type 317LMS31725B, PAnnealed515752053040——A 276
Type 317LMS31725P, Sh, StAnnealed515752053040—95 maxA 167
Types 321 and 321HS32100, S32109B, FHot finished and annealed51575205304050—A 276, A 473
Types 321 and 321HS32100, S32109BCold finished(b) and annealed62090310453040—A 276
Types 321 and 321HS32100, S32109BCold finished(c) and annealed51575205303040—A 276
Types 321 and 321HS32100, S32109WAnnealed515752053035(d)50(d)—A 580
Types 321 and 321HS32100, S32109WCold finished620903104530(d)40—A 580
Types 321 and 321HS32100, S32109P, Sh, StAnnealed515752053040—95 maxA 167, A 240
Types 347 and 348S34700, S34800B, FHot finished and annealed51575205304050A 276, A 473
Types 347 and 348S34700, S34800BCold finished(b) and annealed62090310453040—A 276
Types 347 and 348S34700, S34800BCold finished(c) and annealed51575205303040—A 276
Types 347 and 348S34700, S34800WAnnealed515752053035(d)50(d)—A 580
Types 347 and 348S34700, S34800WCold finished620903104530(d)40—A 580
Types 347 and 348S34700, S34800P, Sh, StAnnealed515752053040—92 maxA 167, A 240
18-18-2S38100P, Sh, StAnnealed515752053040—95 maxA 167, A 240
Type 384S38400W(e)Annealed55080—————A 493
Type 384S38400W(e)Lightly drafted58585—————A 493
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026B, WAnnealed55080240353050—B 473
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026ShapesAnnealed55080240351550—B 473
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026B, WAnnealed and strain hardened62090415601540—B 473
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026WAnnealed and cold finished620–83090–120—————B 473
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026P, Sh, StAnnealed550802403530—95 maxB 463
20Cb-3, 20Mo-4, and 20Mo-6N08020, N08024, N08026Pi, TAnnealed550802403530——B 464, B 468, B 474, B 729
Sanicro 28N08028P, Sh, StAnnealed500732153140—70-90(g)B 709
Sanicro 28N08028Seamless TubeAnnealed500732153140——B 668
Type 330N08330BAnnealed485702103030——B 511
Type 330N08330P, Sh, StAnnealed485702103030—70-90(g)B 536
Type 330N08330PiAnnealed485702103030—70-90(g)B 535, B 546
AL-6XN08366B, WAnnealed515752103030——B 691
AL-6XN08366P, Sh, StAnnealed515752403530—95 maxB 688
AL-6XN08366Pi, TAnnealed515752103030——B 675, B 676, B 690
AL-6XN08366Welded TCold worked515752103010——B 676
JS-700N08700B, WAnnealed55080240353050—B 672
JS-700N08700P, Sh, StAnnealed550802403530—75-90(g)B 599
Type 332N08800Pi, TAnnealed515752103030——B 163, B 407, B 514, B 515
Type 332N08800Seamless Pi, THot finished450651702530——B 407
Type 332N08800BHot worked550802403525——B 408
Type 332N08800BAnnealed515752103030——B 408
Type 332N08800PHot rolled550802403525——B 409
Type 332N08800P, Sh, StAnnealed515752103030——B 409
Type 904LN08904BAnnealed490712203135——B 649
Type 904LN08904WCold finished620–83090–120—————B 649
Type 904LN08904Pi, TAnnealed490712203135——B 673, B 674, B 677
Type 904LN08904P, Sh, StAnnealed490712203135—70-90(g)B 625

Source: ASM Handbook, Vol 1 (10th ed.), “Wrought Stainless Steels”, Table 7.

Austenitic stainless mechanical properties, printable PDF

Three A4 pages with the minimum tensile and yield strengths, elongation, reduction of area and hardness for 147 type, form and condition rows, the ASTM specification named in each row, and our contact details.

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  • (a) B, bar; F, forgings; P, plate; Pi, pipe; Sh, sheet; St, strip; T, tube; W, wire.
  • (b) Up to 13 mm (0.5 in.) thick.
  • (c) Over 13 mm (0.5 in.) thick.
  • (d) For wire 3.96 mm (5/32 in.) and under, elongation and reduction in area shall be 25 and 40%, respectively.
  • (e) 4 mm (0.156 in.) in diameter and over.
  • (f) For forged sections 127 mm (5 in.) and over, the tensile strength shall be 485 MPa (70 ksi).
  • (g) For information only, not a basis for acceptance or rejection.

High-nitrogen austenitic stainless steels

The high-nitrogen grades, where nitrogen replaces part of the nickel for strength and for resistance to pitting. Table 8 of the source.

TypeUNSFormConditionTensile
MPa		Tensile
ksi		Yield 0.2%
MPa		Yield 0.2%
ksi		Elong.
%		Red. of
area, %		Hardness
HRB		ASTM
Type 201S20100BAnnealed51575275404045—A 276
Type 201S20100P, Sh, StAnnealed655953104540—100 maxA 276, A 666
Type 201S20100Sh, St1/4 hard8601255157525——A 666
Type 201S20100Sh, St1/2 hard103015076011018——A 666
Type 201S20100Sh, St3/4 hard121017593013512——A 666
Type 201S20100Sh, StFull hard12801859651409——A 666
Type 202S20200BAnnealed51575275404045—A 276
Type 202S20200P, Sh, StAnnealed620902603840——A 666
Type 202S20200Sh, St1/4 hard8601255157512——A 660
Type 205S20500B, P, Sh, StAnnealed7901154506540—10 maxA 666
Nitronic 50S20910BAnnealed690100380553555—A 276
Nitronic 50S20910WAnnealed690100380553555—A 580
Nitronic 50S20910Sh, StAnnealed7251054156030—100 maxA 240
Nitronic 50S20910PAnnealed6901003805535—100 maxA 240
Cryogenic TenelonS21460B, P, Sh, StAnnealed7251053805540——A 666
Types 216 and 216LS21600, S21603Sh, StAnnealed6901004156040—100 maxA 240
Types 216 and 216LS21600, S21603PAnnealed620903455040—100 maxA 240
Nitronic 40S21900B, WAnnealed62090345504560—A 276, A 580
21-6-9 LC (XM-11)S21904B, W, shapesAnnealed62090345504560—A 276, A 580
21-6-9 LC (XM-11)S21904Sh, StAnnealed6901004156040——A 666
21-6-9 LC (XM-11)S21904PAnnealed620903455045——A 666
Nitronic 33S24000B, WAnnealed690100380553050—A 276, A 580
Nitronic 33S24000Sh, StAnnealed6901004156040—100 maxA 240
Nitronic 33S24000PAnnealed6901003805540—100 maxA 240
Nitronic 32S24100B, WAnnealed690100380553050—A 276, A 580
Type 304NS30451BAnnealed550802403530——A 276
Type 304NS30451P, Sh, StAnnealed550802403530—92 maxA 240
Type 340HNS30452BAnnealed62090345503050—A 276
Type 340HNS30452Sh, StAnnealed620903455030—100 maxA 240
Type 340HNS30452PAnnealed585852754030—100 maxA 240
Type 304LNS30453BAnnealed5157520530———A 276
Type 304LNS30453P, Sh, StAnnealed515752053040—92 maxA 167, A 240
253 MAS30815P, Sh, StAnnealed600873104540—95 maxA 167, A 240
253 MAS30815B, shapesAnnealed60087310454050—A 276
254 SMOS31254P, Sh, StAnnealed650943004435—96A 167, A 240
254 SMOS31254B, shapesAnnealed65095300443550—A 276
Type 316NS31651BAnnealed550802403530——A 276
Type 316NS31651P, Sh, StAnnealed550802403535—95 maxA 240
17-14-4 LNS31726P, Sh, StAnnealed550802403540—96A 167, A 240
17-14-4 LNS31726B, shapesAnnealed550802403540——A 276
317LNS31753P, Sh, StAnnealed550802403540—95A 167, A 240
AL 6XNN08367B, WAnnealed7151043154630——B691
AL 6XNN08367P, Sh, StAnnealed7151043154630—100B688
AL 6XNN08367Flanges, fittings, valves, and so onAnnealed715104315463050—B462
AL 6XNN08367Seamless Pi, TAnnealed7151043154630——B690
AL 6XNN08367Welded PiAnnealed7151043154630——B676
AL 6XNN08367Welded TSolution treated and annealed7151043154630——B676
AL 6XNN08367Welded TCold worked————10——B676
Cronifer 1925 hMON08925B, WAnnealed600873004340——B649
Cronifer 1925 hMON08925Seamless Pi, TAnnealed600873004340——B677
Cronifer 1925 hMON08925Welded PiAnnealed600873004340——B673
Cronifer 1925 hMON08925Welded TAnnealed600873004340——B674

Source: ASM Handbook, Vol 1 (10th ed.), “Wrought Stainless Steels”, Table 8. Values are minimum room-temperature properties by product form and condition.

  • (a) B, bar; P, plate; Pi, pipe; Sh, sheet; St, strip; T, tube; W, wire.
  • Product form codes are B for bar, P for plate, Sh for sheet, St for strip, and W for wire. A type can carry different minimums in different forms, which is why the same steel appears more than once in the table.
  • Cold-worked conditions are given in quarters of hard, from quarter hard to full hard. Tensile and yield strength rise with the amount of cold work and elongation falls.
  • Hardness is given as a maximum for the soft conditions and is often not specified for the cold-worked ones, where the strength minimums already control the condition.

Table notes

Two values in the source table look like printing defects and are reproduced as printed rather than corrected. Type 205 in bar, plate, sheet and strip is given a hardness of 10 max HRB, where the annealed condition of every sibling type sits at 90 HRB or above. Type 202 cold-worked sheet and strip cite ASTM A 660 where every neighbouring row cites A 666. Types 347 and 348 in the hot finished and annealed condition carry no hardness value in the source table, and that cell is left blank here rather than filled in. The UNS numbers of types 321 and 321H are printed as S32100, 32109 in the source and are given here as S32100, S32109.

The values above are minimum acceptance values, not typical properties. A heat is tested against the minimum for its product form, so a certificate showing 620 MPa tensile on a type with a 515 MPa minimum is normal and not a different grade.

Composition data is for general reference only. Actual values vary by standard, mill, and heat number. Confirm against the material test certificate (MTC) or contact Aobo Steel. The martensitic stainless properties chart covers the 410, 420 and 440 series in the same way.

Austenitic against martensitic

The 300 series cannot be hardened by heat treatment and these minimums are reached by annealing or by cold work. The martensitic grades are hardened by quenching and tempering instead.

Yield is quoted at 0.2% offset

Austenitic stainless has no sharp yield point, so the standard uses the stress that produces 0.2 % permanent strain. Two suppliers quoting yield without saying which offset are not quoting the same number.

Cold work instead of alloy

Quarter hard 301 reaches about twice the yield strength of annealed 301 with no change in chemistry. That is the cheapest strength increase available in the 300 series and the reason spring and strip grades are ordered cold worked.

Stainless steel composition chart · Martensitic stainless properties chart · Stainless steel physical properties chart · 420 stainless steel · 440C stainless steel · 4Cr13 stainless steel · Stainless steels overview

Source: ASM Handbook, Vol 1 (10th ed.), “Wrought Stainless Steels”, Table 7. Values are minimum room-temperature properties by product form and condition.

Austenitic stainless mechanical properties, printable PDF

Three A4 pages with the minimum tensile and yield strengths, elongation, reduction of area and hardness for 147 type, form and condition rows, the ASTM specification named in each row, and our contact details.

Download PDF, 707 KB