P 420 QH

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Germany DIN P420QH 承压钢锻件 - 第4部分：可焊细晶粒高屈服强度钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P420QH / P 420 QH

Category	Grade	Standard	Region/Area	Standard Content
Metals	P 420 QH	DIN EN 10222-4	Germany	承压钢锻件 - 第4部分：可焊细晶粒高屈服强度钢

Chemical composition(mass fraction)(wt.%) of the P 420 QH

Element	Min	Max	Similar
V+Nb	-	0.2200	-
V	-	0.2000	-
Si	0.1000	0.6000	-
S	-	0.0150	-
P	-	0.0250	-
Ni	-	1.0000	-
Nb	-	0.0500	-
N	-	0.0200	-
Mo	-	0.1000	-
Mn	1.0000	1.7000	-
Cu	-	0.2000	-
Cr	-	0.3000	-
CEV	-	0.5100	-
C	-	0.2000	-
Al	0.0200	0.0600	-

Mechanical Properties of steel grade P 420 QH

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)
356 (≥)	932 (≥)	22	33	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	141

Physical Properties of steel grade P 420 QH

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
42	-	-			0.11	-
252	115	-	13.3	242		-
998	-	34	14.2			311	431

Heat Treatment of steel grade P 420 QH

Heat treated : 1497°C - 1181°C

Technological Curves of steel grade P 420 QH

No Curve

Cross Reference Table (Equivalent Grade) of P 420 QH

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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