A988 S31703

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America ASTM A988S31703 高温设备用热等压不锈钢法兰、配件、阀门和零件的标准规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A988S31703 / A988 S31703

Category	Grade	Standard	Region/Area	Standard Content
Metals	A988 S31703	ASTM A988/A988M	America	高温设备用热等压不锈钢法兰、配件、阀门和零件的标准规范

Chemical composition(mass fraction)(wt.%) of the A988 S31703

Element	Min	Max	Similar
Si	-	1.0000	-
S	-	0.0300	-
P	-	0.0450	-
Ni	11.0000	15.0000	-
Mo	3.0000	4.0000	-
Mn	-	2.0000	-
Cr	18.0000	20.0000	-
C	-	0.0300	-

Mechanical Properties of steel grade A988 S31703

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
811 (≥)	262 (≥)	31	23	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	412

Physical Properties of steel grade A988 S31703

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
33	-	-			0.11	-
287	475	-	11.3	314		-
745	-	43	24.2			313	332

Heat Treatment of steel grade A988 S31703

Heat treated : 1399°C - 1739°C

Technological Curves of steel grade A988 S31703

No Curve

Cross Reference Table (Equivalent Grade) of A988 S31703

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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