Merkmale

Microstructure: Mainly ferrite and martensite structures. Martensite is dispersed in an island shape on the ferrite matrix, and the ferrite is soft, which makes the steel have better formability. Martensite is harder and gives steel its high strength. Strength increases with the proportion of harder martensite. Depending on the application, DP steels with different yield-strength ratios (YS/TS) are produced.

Performance characteristics: It has the characteristics of no yield elongation, no room temperature aging, low yield-to-strength ratio, high work hardening index and high bake hardening value.

Main uses: DP series high-strength steel is currently the preferred steel type for structural parts. It is used in structural parts, reinforcements and anti-collision parts, such as underbody cross members, rails, anti-collision bars, anti-collision bar reinforced structural parts, etc.

Supply standards

Baosteel can supply in accordance with the requirements of international standards such as European standards, American standards or JIS, or in accordance with user standards or requirements, or in accordance with the following Baosteel standards.

 ErtragsstärkeZerreißfestigkeitVerlängerung
 (not less than)(not less than)
HC250/450DP250-32045028
HC290/490DP290-39049026
HC340/590DP340-44059022
HC420/780DP420-55078015
HC500/780DP500-65078012
HC550/980DP550-7209809
HC650/980DP650-9009808
HC700/980DP700-9209808
HC820/1180DP820-115011805
 ErtragsstärkeZerreißfestigkeitVerlängerung
 (not less than)(not less than)
HC250/450DPD+Z250-34045029
HC250/450DPD+ZF27
HC300/500DPD+Z290-37050027
HC300/500DPD+ZF25
HC340/590DPD+Z340-44059022
HC340/590DPD+ZF20
HC420/780DPD+Z420-55078017
HC420/780DPD+ZF15
HC500/780DPD+Z500-65078014
HC500/780DPD+ZF12
HC550/980DPD+Z550-73098010
HC550/980DPD+ZF8
HC650/980DPD+Z650-9009808
HC650/980DPD+ZF6
HC700/980DPD+Z700-9009808
HC700/980DPD+ZF6
HC740/1180DPD+Z740-98011807
HC740/1180DPD+ZF5
HC820/1180DPD+Z820-115011806
HC820/1180DPD+ZF4