9a

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International ISO 9a 热处理钢、合金钢和易切削钢-第13部分：锻造不锈钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 9a / 9a

Category	Grade	Standard	Region/Area	Standard Content
Metals	9a	ISO 683-13	International	热处理钢、合金钢和易切削钢-第13部分：锻造不锈钢

Chemical composition(mass fraction)(wt.%) of the 9a

Element	Min	Max	Similar
Si	-	1.0000	-
S	0.1500	0.3500	-
P	-	0.0600	-
Ni	-	0.6000	-
Mo	-	0.6000	-
Mn	-	1.5000	-
Cr	15.5000	17.5000	-
C	0.1000	0.1700	-

Mechanical Properties of steel grade 9a

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)
672 (≥)	555 (≥)	12	43	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	121

Physical Properties of steel grade 9a

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
13	-	-			0.23	-
719	813	-	12.3	214		-
898	-	34	14.2			341	241

Heat Treatment of steel grade 9a

Heat treated : 1343°C - 1284°C

Technological Curves of steel grade 9a

No Curve

Cross Reference Table (Equivalent Grade) of 9a

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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9a