A709 Gr.50

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#A709 # #Gr.50

Description

A709 Gr.50 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: A709 Gr.50

Category	Type	Steel Grade
Steel Grades	Carbon Steel	A709 Gr.50
		A633 Gr.C
		A633 K12000
		A633 Gr.D
		A633 K02003
		A633 Gr.E
		A633 K12202
		A656 Type3
		A656 Type7
		A690 K12249
		A709 Gr.36

Chemical composition(mass fraction)(wt.%) of the A709 Gr.50

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.23	0.4	1.35	0.04	0.05
Mo	Al	Cu	Nb	Ti	V	Ce
			0.005-0.05	0.006-0.04	0.01-0.15
N	Co	Pb	B	Other
0.003-0.015

Mechanical Properties of steel grade A709 Gr.50

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)
198 (≥)	737 (≥)	43	12	42	Solution and Aging, Annealing, Ausaging, Q+T,etc	424

Physical Properties of steel grade A709 Gr.50

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
12	-	-			0.43	-
532	691	-	42.3	334		-
428	-	31	34.2			243	144

Heat Treatment of steel grade A709 Gr.50

Heat treated : 1883°C - 1395°C

Technological Curves of steel grade A709 Gr.50

No Curve

Cross Reference Table (Equivalent Grade) of A709 Gr.50

Grade	Standard	Country	Application
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
ASTM 1006	ASTM	USA	General use carbon steel bar
UNS G10060	UNS	USA	General use carbon steel bar

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