Z21721

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America UNS Z21721 Zinc-lead-cadmium rolled zinc alloy and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Z21721 / Z21721

Category	Grade	Standard	Region/Area	Standard Content
Metals	Z21721	--	America	Zinc-lead-cadmium rolled zinc alloy

Chemical composition(mass fraction)(wt.%) of the Z21721

Element	Min	Max	Similar
Zn	-	-	-
Ti	-	0.0200	-
Pb	0.0300	0.0800	-
Mn	-	0.0150	-
Mg	-	0.0015	-
Fe	-	0.0100	-
Cu	-	0.0050	-
Cd	-	0.0050	-
Al	-	0.0020	-

Mechanical Properties of steel grade Z21721

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)
742 (≥)	212 (≥)	32	34	11	Solution and Aging, Annealing, Ausaging, Q+T,etc	322

Physical Properties of steel grade Z21721

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
21	-	-			0.11	-
721	731	-	24.3	233		-
225	-	32	21.2			324	412

Heat Treatment of steel grade Z21721

Heat treated : 1935°C - 1625°C

Technological Curves of steel grade Z21721

No Curve

Cross Reference Table (Equivalent Grade) of Z21721

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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