Cold rolled carbon steel

Define

The carbon content is less than 2.11%, in addition to iron, carbon and silicon, manganese, phosphorus, sulfur and other impurities within the limit, does not contain other alloying elements of iron and carbon alloy. The carbon content of industrial carbon steel is generally 0.05%~1.35%. The properties of carbon steel mainly depend on the carbon content. With the increase of carbon content, the strength and hardness of steel increase, while the plasticity, toughness and weldability decrease.

Grade and purpose

SPCC：General use 

SPCD：For stamping

SPCE, SPCEN :for deep stamping

Chemical composition

Mechanical properties 

Cold rolled mild steel

Define

Low carbon steel for carbon content less than 0.25% of carbon steel, because of its low strength, low hardness and soft, it is also known as mild steel. It includes most common carbon structural steel and a part of high quality carbon structural steel, mostly without heat treatment for engineering structural parts, some by carburizing and other heat treatment for wear-resistant mechanical parts. The annealed structure of low carbon steel is ferrite and a small amount of pearlite, which has low strength and hardness, good plasticity and toughness. Therefore, its cold formability is good, can be used to roll, bending, stamping and other methods for cold forming. The steel also has good weldability. Low carbon steel generally refers to the carbon content between 0.10~0.25% of steel. This kind of steel has low hardness and good plasticity, which is easy to use cold plastic deformation molding process, welding and cutting, and is often used to manufacture chains, rivets, bolts, shafts, etc.

Grade and purpose

DC01(St12) : general use

DC03(St13) : for stamping

DC04(St14,St15) : for deep stamping

DC05(BSC2) : for extra deep stamping

DC06(St16,St14-T,BSC3) : for super deep stamping

Chemical composition

Mechanical properties 

Cold rolled stamping steel

Define

Steel that is plastically deformed into a desired shaped part by means of a mold and pressure at room temperature. Also known as stamping formed steel. Often in the form of steel plates or strips. It has good cold stamping formability, including 4 kinds of deep punching, bulging, extended flange and bending properties related to the main cold stamping process. Stamping steel is widely used in automobiles, tractors, instruments and household appliances, especially in the automobile manufacturing industry. Such as automobile covering parts and transverse beams. Stamping steel is developed with the development of automobile industry.

Grade and purpose

BLC: general use

BLD: for stamping

BUSD: For deep flushing

BUFD: for extra deep flushing

BSUFD: for super deep drawing

Chemical composition

Mechanical properties 

High strength steel with phosphorus

Define

Phosphorus added high strength steel refers to the low carbon steel or ultra-low carbon steel by adding a certain amount of phosphorus, manganese and other solid solution strengthening elements to improve the strength.

Grade and purpose

B170P1: for stamping

B210P1: general use

B250P1: used for structure

B180P2(BP340) : general use

B220P2(BP380) : for structure

Chemical composition

Mechanical properties 

Bake hardened high strength steel

Define

Bake - hardened steel has strength and high formability. The strength of the final parts is obtained through the work hardening and aging phenomena in the process of painting.

Grade and purpose

B140H1: For deep stamping

B180H1: for stamping

B180H2(BH340) : for stamping

Chemical composition

Mechanical properties 

Duplex high strength steel

Define

Double phase steel (DP steel), also known as complex phase steel. Steel consisting of martensite, austenite or bainite and ferrite matrix. Generally speaking, the steel composed of ferrite and austenitic phase is called duplex stainless steel, and the steel composed of ferrite and martensite phase is called duplex steel. Biphasic steel is made of low carbon steel or low alloy high strength steel by heat treatment in critical zone or controlled rolling. The yield strength σs and tensile strength σb of a typical duplex steel are 310MPa and 655MPa respectively. Dual-phase steel is used to make cold drawing, deep drawing forming complex components, also can be used as pipeline steel, chain, cold drawn steel wire, prestressed reinforcement and so on.

Grade and purpose

B340/590DP: structural component, reinforcement component

B400/780DP: reinforcement parts, anti-collision parts

Chemical composition

Mechanical properties 

Low alloy high strength steel

Define

This is a weldable low carbon engineering structure steel. Its carbon content is usually less than 0.25%, compared with ordinary carbon structural steel has a higher yield point σs or yield strength σ0.2(30~80kgf/mm2) and yield strength ratio σs/σb(0.65~0.95), better cold and hot processing formability, good weldability, low cold brittle tendency, notch and aging sensitivity, And have better corrosion resistance to atmosphere, sea water and so on. Its alloying element content is low, generally below 2.5%, in the hot rolling state or after a simple heat treatment (not quenched and tempered state) after use.

Grade and purpose

B340LA: structural component

B410LA: Structural component and strengthening component

Chemical composition

Mechanical properties 

Carbon structural steel

Define

A type of carbon steel. Carbon content of about 0.05%~0.70%, individual can be as high as 0.90%. It can be divided into two categories: common carbon structural steel and high quality carbon structural steel. The former contains more impurities, low price, used for performance requirements are not high, its carbon content is mostly below 0.30%, manganese content is not more than 0.80%, low strength, but good plasticity, toughness, cold deformation performance. High quality carbon structural steel is pure, less impurities, good mechanical properties, and can be used after heat treatment. According to the manganese content, they were divided into two groups: ordinary manganese content (less than 0.80%) and high manganese content (0.80%-1.20%).

Grade and purpose

St37-2G: structural parts

St44-3G: structural component

St52-3G: structural parts, strengthening parts

Chemical composition

Mechanical properties 

Steel for battery housing

Product features

1. Good stamping molding

It has the characteristics of deep drawing, thinning and small ears.

2. High dimensional accuracy

Steel thickness accuracy of pocked battery shell :+0.01mm

The small negative tolerance design of smooth cell shell steel meets the stamping requirements of users: -0.007mm~0.003mm to adapt to the thickness of 0.25~0.3mm).

3.High surface quality

The characteristics of high purity steel, can reduce the material caused by the 'trachoma' defects;

Excellent material intrinsic quality characteristics, can reduce the material caused by the 'snowflake point' defects: high grade surface quality and control, can reduce the material to stamping quality risk.

Grade and purpose

BDCK

Smooth: alkaline battery steel shell

Pockmarked: steel shell for rechargeable battery

Chemical composition

Mechanical properties 

Precision welding pipe steel

Define

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or strip after crimping forming. Welding steel pipe production process is simple, high production efficiency, variety specifications, less equipment, but the general strength is lower than seamless steel pipe. The precision of precision welded pipe is more precise than that of ordinary welded pipe, and the process is also more strict. Welded pipe is generally lower, seamless pipe is generally on the difference.

Grade and purpose

BHG1: single-layer precision welded pipe

BHG2: double-layer precision welded pipe

Chemical composition

Mechanical properties 

The steel described provides stamping, swing shearing, leveling, laser cutting, laser welding and strip processing, and we also have a professional logistics team to provide you with a full range of services.

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