martensite high strength cold continuous rolled steel strip-九游会亚洲
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 | ||||||||
a 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 | |