martensite high strength cold continuous rolled steel strip-k8凯发官网

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martensite high strength cold continuous rolled steel strip

main use

ms  series high-strength steel cold-rolled automotive panels are mainly  used for structural reinforcements and safety parts, such as front and  rear bumpers, side door anti-collision bars and sill plates.

2 grades and standards

grade hc500/785ms~ hc1200/1500ms; implementation standard: q/bqb 415-2009

3 product supply technical conditions

thickness is 0.50mm~2.1mm

3.1 chemical composition



chemical component a (melting analysis)

%  (质量分数)


牌 号

c


si

mn


p

s

alt


不大于


不大于

不大于


不大于

不大于

不小于










hc500/780ms









hc700/900ms









hc700/980ms









hc860/1100ms

0.30


2.2

3.0


0.020

0.025

0.010

hc950/1180ms











hc1030/1300ms









hc1150/1400ms









hc1200/1500ms









other alloying elements are allowed to be added, but ni cr mo≤1.5% and cu<0.20%.




 

 

3.2mechanical properties

 



拉伸试验a, b



屈服强度

抗拉强度


断后伸长率

牌号

rm


a80mm

rp0.2



mpa


%


mpa



不小于


不小于









hc500/780ms

500~700

780


3

hc700/900ms

700~1000

900


2

hc700/980ms

700~960

980


2

hc860/1100ms

860~1100

1100


2

hc950/1180ms

950~1200

1180


2

hc1030/1300ms

1030~1300

1300


2

hc1150/1400ms

1150~1400

1400


2

hc1200/1500ms

1200~1500

1500


2


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