BS700MCK2 - Q/BQB 316-2023

Grade	BS700MCK2
Corresponding Standard	Q/BQB 316-2023 Continuously Hot-Rolled Sheet and Strip for Engineering Machinery
Classification	Alloy Steel

BS700MCK2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Mo ^①	Ti ^①	V ^①	Nb ^①	Al ^②
Minimum Value	-	-	-	-	-	-	-	-	-	0.015
Maximum Value	0.12	0.6	2.1	0.025	0.01	0.5	0.22	0.2	0.09	-

* The steel plates and steel strips shall be delivered in the controlled rolling condition or in the controlled rolling plus tempering condition.

① At the supplier’s discretion, other alloying elements such as Mo, Ti, V, and Nb may be added. In this case, the lower limit for Alt is not required, but the requirement of Ti + V + Nb ≤ 0.22% shall be satisfied.
② Alt.

BS700MCK2 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
transverse specimen 750~950	ReH，transverse specimen ≥700	transverse specimen ≥15	(-20℃) longitudinal specimen ≥40

BS700MCK2 Corresponding Standards(Same grade name, different standards)

1
	BS700MCK2
2	Q/BQB 316-2023
	BS700MCK2

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