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HC290/490DP common cold rolled DP steel microstructure: mainly with ferrite and martensite, Martensite disperses in the ferrite matrix with island shape, soft ferrite can make the steel have good formability. Hard martensite can make the steel own high strength. The strength will enhance with the improvement of ratio in Martensite. According to the application, resulting in different yield ratio (YS / TS) DP steel.
HC290/490DP common cold rolled DP steel  performance features: with no yield elongation, no room temperature aging, low  yield ratio, high work hardening exponent and high bake hardening value. 
HC290/490DP common cold rolled DP steel  main purpose: DP series of high-strength steel structure is now the preferred  type parts, used for structure members ,reinforcements and collision prevention  parts, such as vehicle cross member under the vehicle, rail, crash bars to  strengthen the structure members etc.
HC290/490DP common cold rolled DP steel performance:
Steel grade  | 
            
             a, b   | 
            
             Rm' Mpa  | 
            
             c   | 
            
             n   | 
        
| 
             HC290/490DP  | 
            
             290~390  | 
            
             490  | 
            
             24  | 
            
             0.15  | 
        
Having been cooperating with several famous  steel mills in China,we can give you the professional advice of common  cold rolled DP steel and HC290/490DP cold rolled coils,so if you want to purchaseDP steel, just contact us with  the following information: 
Email : info@sg295steel.com
Website: www.sphc-steel.com
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