7021

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China GB 7021 变形铝及铝合金化学成分 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 7021 / 7021

Category	Grade	Standard	Region/Area	Standard Content
Metals	7021	GB/T 3190	China	变形铝及铝合金化学成分

Chemical composition(mass fraction)(wt.%) of the 7021

Element	Min	Max	Similar
Al	-	-	-
Total Others	-	0.1500	-
Others Total	-	0.0500	-
Zr	0.0800	0.1800	-
Ti	-	0.1000	-
Zn	5.0000	6.0000	-
Cr	-	0.0500	-
Mg	1.2000	1.8000	-
Mn	-	0.1000	-
Cu	-	0.2500	-
Fe	-	0.4000	-
Si	-	0.2500	-
Al	-	-	-
Total Others	-	0.1500	-
Others Total	-	0.0500	-
Zr	0.0800	0.1800	-
Ti	-	0.1000	-
Zn	5.0000	6.0000	-
Cr	-	0.0500	-
Mg	1.2000	1.8000	-
Mn	-	0.1000	-
Cu	-	0.2500	-
Fe	-	0.4000	-
Si	-	0.2500	-
Zr	0.0800	0.1800	-
Zn	5.0000	6.0000	-
Total Others	-	0.1500	-
Ti	-	0.1000	-
Si	-	0.2500	-
Others Total	-	0.0500	-
Mn	-	0.1000	-
Mg	1.2000	1.8000	-
Fe	-	0.4000	-
Cu	-	0.2500	-
Cr	-	0.0500	-
Al	-	-	-
Zr	0.0800	0.1800	-
Zn	5.0000	6.0000	-
Total Others	-	0.1500	-
Ti	-	0.1000	-
Si	-	0.2500	-
Others total	-	0.0500	-
Mn	-	0.1000	-
Mg	1.2000	1.8000	-
Fe	-	0.4000	-
Cu	-	0.2500	-
Cr	-	0.0500	-
Al	-	-	-

Mechanical Properties of steel grade 7021

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)
798 (≥)	938 (≥)	23	32	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	422

Physical Properties of steel grade 7021

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
32	-	-			0.12	-
843	183	-	34.3	414		-
657	-	31	32.2			231	131

Heat Treatment of steel grade 7021

Heat treated : 1817°C - 1872°C

Technological Curves of steel grade 7021

No Curve

Cross Reference Table (Equivalent Grade) of 7021

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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