B.S. BH 21

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Description

BS B.S. BH 21 Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: B.S. BH 21

Category	Type	Steel Grade	Standard
Steel Grades	Stainless Steel	B.S. BH 21	BS
		B.S. S. 527
		B.S. S. 527
		B.S. S. 536
		B.S. S.537
		B.S. BA 2
		B.S. BD 2
		B.S. BD 3
		B.S. BH 11
		B.S. BH 12
		B.S. BH 13

Chemical composition(mass fraction)(wt.%) of the B.S. BH 21

Element	Weight %
C	0.26-036
Mn	0.15-0.40
Si	0.15-0.50
Cr	3.00-3.75
Ni	0.3
W	8.50-10.00
V	0.30-0.60
Cu	0.25
P	0.03
S	0.03

Mechanical Properties of steel grade B.S. BH 21

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)
294 (≥)	155 (≥)	14	13	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	223

Physical Properties of steel grade B.S. BH 21

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
31	-	-			0.44	-
211	453	-	22.3	321		-
879	-	34	44.2			124	232

Heat Treatment of steel grade B.S. BH 21

Heat treated : 1636°C - 1126°C

Technological Curves of steel grade B.S. BH 21

No Curve

Cross Reference Table (Equivalent Grade) of B.S. BH 21

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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