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AISI 202 Stainless steel (Low nickel general purpose), austenitic | Annealed | Mechanical Properties

Mechanical properties	Values
Young’s modulus	* 190 – 210 GPa
Specific stiffness	* 24.3 – 27 MN.m/kg
Yield strength (elastic limit)	310 – 340 MPa
Tensile strength	612 – 880 MPa
Specific strength	* 39.7 – 43.7 kN.m/kg
Elongation	40 – 50 % strain
Compressive strength	* 275 – 515 MPa
Flexural modulus	* 190 – 210 GPa
Flexural strength (modulus of rupture)	275 – 515 MPa
Shear modulus	* 74 – 84 GPa
Bulk modulus	* 134 – 156 GPa
Poisson’s ratio	0.265 – 0.275
Shape factor	58
Hardness – Vickers	* 192 – 250 HV
Hardness – Rockwell B	85 – 95 HRB
Hardness – Rockwell C	* 9 – 23 HRC
Hardness – Brinell	228 – 254 HB
Elastic stored energy (springs)	* 463 – 693 kJ/m^3
Fatigue strength at 10^7 cycles	* 268 – 386 MPa
Fatigue strength model (stress range)	* 222 – 466 MPa
Values indicated with asterisks () are approximate. No guarantee is provided for the precision of this information.

Weldability*	Good
Weldability – MIG	Excellent
Weldability – plasma	Excellent
Weldability – SAW	Excellent
Weldability – TIG	Excellent
Brazeability	Fair
*Notes: Preheating and post weld heat treatments may be required

Carbon equivalency: 0.883 – 1.25

Carbon equivalency: 0.775 – 1.13

Mechanical properties	Values
Young’s modulus	193 – 201 GPa
Specific stiffness	* 24.7 – 25.9 MN.m/kg
Yield strength (elastic limit)	515 – 760 MPa
Tensile strength	860 – 1.03e3 MPa
Specific strength	* 66 – 97.5 kN.m/kg
Elongation	20 – 40 % strain
Compressive strength	* 515 – 760 MPa
Flexural modulus	* 193 – 201 GPa
Flexural strength (modulus of rupture)	515 – 760 MPa
Shear modulus	75 – 80 GPa
Bulk modulus	136 – 149 GPa
Poisson’s ratio	0.265 – 0.275
Shape factor	37
Hardness – Vickers	* 252 – 280 HV
Hardness – Rockwell B	* 100 – 103 HRB
Hardness – Rockwell C	23 – 27 HRC
Hardness – Brinell	* 240 – 266 HB
Elastic stored energy (springs)	194 – 307 kJ/m^3
Fatigue strength at 10^7 cycles	* 385 – 437 MPa
Fatigue strength model (stress range)	* 334 – 504 MPa
Values indicated with asterisks () are approximate. No guarantee is provided for the precision of this information.

Mechanical properties	Values
Young’s modulus	193 – 201 GPa
Specific stiffness	* 24.7 – 25.9 MN.m/kg
Yield strength (elastic limit)	760 – 930 MPa
Tensile strength	1.03e3 – 1.21e3 MPa
Specific strength	* 97.4 – 119 kN.m/kg
Elongation	10 – 20 % strain
Compressive strength	* 760 – 930 MPa
Flexural modulus	* 193 – 201 GPa
Flexural strength (modulus of rupture)	760 – 930 MPa
Shear modulus	75 – 80 GPa
Bulk modulus	136 – 149 GPa
Poisson’s ratio	0.265 – 0.275
Shape factor	28
Hardness – Vickers	* 302 – 334 HV
Hardness – Rockwell B	* 105 – 108 HRB
Hardness – Rockwell C	30 – 34 HRC
Hardness – Brinell	* 285 – 317 HB
Elastic stored energy (springs)	2.19e3 – 2.38e3 kJ/m^3
Fatigue strength at 10^7 cycles	* 436 – 490 MPa
Fatigue strength model (stress range)	* 389 – 550 MPa
Values indicated with asterisks () are approximate. No guarantee is provided for the precision of this information.

Designation: AISI 201

UNS number	S20100
US name	ASTM TP201, ASTM S20103, ASTM S20100 Class 2, ASTM S20100 Class 1, ASTM S20100, ~ASTM S20153
EN name	X12CrMnNiN17-7-5
EN number	1.4372, 1.4371
GB (Chinese) name	1Cr17Mn6Ni5N
JIS (Japanese) name	SUS201

Country	Equivalent / Similar Grade
Australia	201-2 to AS 1449
China	1Cr17Mn6Ni5N to GB 1220, 1Cr17Mn6Ni5N to GB 4237, 1Cr17Mn6Ni5N to GB/T 3280, 1Cr17Mn6Ni5N to GB/T 4239, 1Cr17Mn6Ni5N to GB/T 4356, 1Cr17Mn6Ni5N to GB/T 6725
India	TP201 to IS 11714/4, TP201 to IS 11714/5, X10Cr17Mn6Ni4 to IS 1570/5, X10Cr17Mn6Ni4 to IS 6527, X10Cr17Mn6Ni4 to IS 6528, X10Cr17Mn6Ni4N to IS 6603
International	X12CrMnNiN17-7-5 to ISO 6931-2
Japan	SUS201 to JIS G4303, SUS201 to JIS G4308, SUS201 to JIS G4309
South Korea	STS 201 to KS D 3706, STS 201-W1 to KS D 3703, STS201 to KS D 3702
UK	X12CrMnNiN17-7-5 to BS EN 10088-1, X12CrMnNiN17-7-5 to BS EN 10088-2, X12CrMnNiN17-7-5 to BS EN 10088-3
USA	201 to ASTM A473, S20100 Class 1 to ASTM A666, S20100 Class 2 to ASTM A666, S20100 to ASTM A240/A240M, S20100 to ASTM A276, S20100 to ASTM A959, S20100 to SAE J405, TP201 to ASTM A213/A213M, TP201 to ASTM A249/A249M, UNS S20100

Tradenames:

ACX 210, ES 201, UNILOY 201

Composition detail	%
C (carbon)	0 – 0.15 %
Cr (chromium)	16 – 18 %
Fe (iron)	* 67.5 – 75 %
Mn (manganese)	5.5 – 7.5 %
N (nitrogen)	0 – 0.25 %
Ni (nickel)	3.5 – 5.5 %
P (phosphorus)	0 – 0.06 %
S (sulfur)	0 – 0.03 %
Si (silicon)	0 – 1 %
Values indicated with asterisks () are approximate. No guarantee is provided for the precision of this information.

Weldability*	Good
Weldability – MIG	Excellent
Weldability – plasma	Excellent
Weldability – SAW	Excellent
Weldability – TIG	Excellent
Brazeability	Fair
*Notes: Preheating and post weld heat treatments may be required

Designation

AISI 201

UNS number	S20103
US name	AISI 201

Standards with similar compositions
UK	X2CrMnNiN17-7-5 to BS EN 10088-1, X2CrMnNiN17-7-5 to BS EN 10088-2
USA	S20103 to ASTM A240/A240M, S20103 to ASTM A666, S20103 to ASTM A959, S20103 to SAE J405, S20153 to SAE J405, UNS S20103, UNS S20153

Tradenames

AISI TYPE 201 MODIFIED, ALLEGHENY LUDLUM TYPE 201 COMPOSITION BALANCED, FIRTH-VICKERS F.S.M.1