UNI 20 NiCrMo

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Description

UNI 20 NiCrMo Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: UNI 20 NiCrMo

Category	Type	Steel Grade
Steel Grades	Alloy Steel	UNI 20 NiCrMo
		26CrMo4
		1.7219
		Inconel 600
		AISI 6150H
		UNI 5O CrV 4
		AISI 8617H
		AISI 8617
		AISI 8620
		AISI 8620H
		UNI 20 NiCrMo 2

Chemical composition(mass fraction)(wt.%) of the UNI 20 NiCrMo

Element	Weight %
C	0.14-0.20
Mn	0.60-0.95
Cr	0.35-0.65
Ni	0.35-0.75
Mo	0.15-0.25
P	0.035
S	0.040
Si	0.15-0.30

Mechanical Properties of steel grade UNI 20 NiCrMo

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)
465 (≥)	359 (≥)	34	34	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	413

Physical Properties of steel grade UNI 20 NiCrMo

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	-	-			0.14	-
573	411	-	32.3	413		-
511	-	24	43.2			112	311

Heat Treatment of steel grade UNI 20 NiCrMo

Heat treated : 1564°C - 1349°C

Technological Curves of steel grade UNI 20 NiCrMo

No Curve

Cross Reference Table (Equivalent Grade) of UNI 20 NiCrMo

Grade	Standard	Country	Application
UnitempAF2-1		USA	Martensitic special steel
UnitempHS	AISI	USA	Martensitic special steel
Q195		China	Engineering and welding
Q215		China	Engineering and welding
Q215 B		China	Engineering and welding
Q235		China	Engineering and welding
Q235 B		China	Engineering and welding
Q235 C		China	Engineering and welding
Q235 D		China	Engineering and welding
Q255 A		China	Engineering and welding
Q255 B		China	Engineering and welding
Q275		China	Engineering and welding
Q235q C		China	Bridge structure with steel
Q235q D		China	Bridge structure with steel
Q345q E		China	Bridge structure with steel
Q345q C		China	Bridge structure with steel
ASTM 1030	ASTM	USA	General use carbon steel bar
UNS G10300	UNS	USA	General use carbon steel bar
ASTM 1005	ASTM	USA	General use carbon steel bar
UNS G10050	UNS	USA	General use carbon steel bar

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