UNI 40 NiCrMo 2 KB

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Description

UNI 40 NiCrMo 2 KB Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: UNI 40 NiCrMo 2 KB

Category	Type	Steel Grade
Steel Grades	Alloy Steel	UNI 40 NiCrMo 2 KB
		UNI 34 Cr 4 KB
		UNI 34 CrMo 4 KB
		UNI 35 CrMo 4
		UNI 35 CrMo 4 F
		UNI 38 Cr 4 KB
		UNI 38 CrB 1 KB
		UNI 38 CrMo 4
		UNI 38 CrMo 4 KB
		UNI 40 Cr 4
		UNI 40 CrMo 4

Chemical composition(mass fraction)(wt.%) of the UNI 40 NiCrMo 2 KB

Element	Weight %
C	0.38-0.43
Mn	0.75-1.00
P	0.035 (max)
S	0.04 (max)
Si	0.15-0.30
Cr	0.40-0.60
Ni	0.40-0.70
Mo	0.15-0.25

Mechanical Properties of steel grade UNI 40 NiCrMo 2 KB

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)
132 (≥)	136 (≥)	11	31	42	Solution and Aging, Annealing, Ausaging, Q+T,etc	313

Physical Properties of steel grade UNI 40 NiCrMo 2 KB

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
34	-	-			0.22	-
882	795	-	43.3	123		-
934	-	23	14.2			344	413

Heat Treatment of steel grade UNI 40 NiCrMo 2 KB

Heat treated : 1237°C - 1271°C

Technological Curves of steel grade UNI 40 NiCrMo 2 KB

No Curve

Cross Reference Table (Equivalent Grade) of UNI 40 NiCrMo 2 KB

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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