Austenitic

Stainless steel grades with chromium 18% above, nickel 8% around, as well as a small amount of molybdenum, titanium, nitrogen and other elements. It features a very good overall performance, good plasticity, toughness, weldability and corrosion resistance. Few examples of austenitic grade as below:

304

Chemical Composition Limits
Weight%CSiMnP + SCrNiNMoCu
3040.08 max1.00 max2.0 max0.040 P
0.03 S
18.0 - 20.08.0 - 100.1 max--
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
30451520540

304L

Chemical Composition Limits
Weight%CSiMnP + SCrNiNMoCu
304L0.03 max1.00 max2.0 max0.040 P
0.03 S
18.0 - 20.08.0 - 10.000.1 max--
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
304L48517040

304H

Chemical Composition Limits
Weight%CSiMnP + SCrNiNMoCu
304H0.04-0.11.00 max2.0 max0.040 P
0.03 S
18.0 - 20.08.0 - 100.1 max--
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
304H51520540

316

Chemical Composition Limits
Weight%CMnPSSiCrNiMoCuFe
3160.080 max2.00 max0.045max0.030 max1.0 max16-18.541913435261.0 maxBal
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
31651520540

316L

Chemical Composition Limits
Weight%CMnPSSiCrNiMoCuFe
316L0.030 max2.00 max0.045max0.030 max1.0 max16-1841913435261.0 maxBal
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
316L48517040

316H

Chemical Composition Limits
Weight%CMnPSSiCrNiMoCuFe
316H0.04-0.12.00 max0.045max0.030 max0.75 max16-184191343526-Bal
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
316H51520540

317

Chemical Composition Limits
Weight%CrNiMnSiCMoPSCu
31718-20423092.00 max1 max0.080 max435580.045 max0.030 max-
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
31751520535

317L

Chemical Composition Limits
Weight%CrNiMnSiCMoPSCu
317L18-20423092.00 max1 max0.030 max435580.045 max0.030 max
Mechanical Properties
Stainless SteelTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
317L51520540

321

Chemical Composition Limits
Weight%CSiMnPSCrNiTiNMo
3210.08 max1 max2.0 max0.045 max0.03 max17-19438085*(C+N)-0.70.1 max0.75

321H

Chemical Composition Limits
Weight%CSiMnPSCrNiTiNMo
321H0.04-0.101 max2.0 max0.045 max0.03 max17-19438084*(C+N)-0.7--

310S

Chemical Composition Limits
Weight%CrNiMnSiCMoPSCu
Alloy 310S24-2619-222.00 max1 max0.080 max0.75 max0.040 max0.030 max0.75 max
Mechanical Properties
AlloyTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
310S500-70021035

309S

Chemical Composition Limits
Weight%CrNiMnSiCMoPSCu
Alloy 309S22-24423392.00 max1 max0.080 max0.75 max0.045 max0.030 max-
Mechanical Properties
AlloyTensile Strength (MPa)Yield Strength (0.2% Offset) MPaElongation %
Type 309S51520535

347

Chemical Composition Limits
Weight%CPSiNiMnSCrNbFeCoMoCu
3470.08 max0.045 max0.75 max415182.0 max0.030 max17-1910 x C minBal1.00 max only AMS 56460.75 max0.75 max
Mechanical Properties
MaterialYield Strength (ksi)Tensile Strength (ksi)% ElongationHardness HB
347≥205510-740≥40≤230

347H

Chemical Composition Limits
Weight%CPSiNiMnSCrNbFeCoMoCu
347H0.04-0.100.045 max0.75max415182.0 max0.030 max17-198 x C minBal---
Mechanical Properties
MaterialYield Strength (ksi)Tensile Strength (ksi)% ElongationHardness HB
347H≥205510-690≥35-

253MA

Chemical Composition:
Grade%NiCrCMnSiSPNCe
253MaMin10200.051.40.140.03
Max12220.10.820.030.040.20.08
Mechanical Properties
Heat TreatmentT*SY*SElHardness
Rm N/mm2RP0.2N/mm2A5 %HB
Hot Rolled45018035210