What Is The Hardness Of Cold-rolled Sheet

1. Ordinary cold-rolled sheet
The hardness range of ordinary cold-rolled sheet is generally between HRB1/2H=74~89 and 1/4H=65~80. Among them, HRB refers to Rockwell hardness, which is a standard for measuring the softness and hardness of materials. The higher the value, the harder the material. 1/2H and 1/4H refer to the location of hardness testing, with 1/2H indicating testing at half the thickness of the steel plate and 1/4H indicating testing at one-quarter the thickness of the steel plate.
Ordinary cold-rolled steel plates are mainly used in industries such as construction, automotive, and home appliances, requiring certain strength and hardness, as well as good plasticity and toughness. In the field of architecture, ordinary cold-rolled sheet can be used to make lightweight steel structures, exterior wall panels and roofs of high-rise buildings, etc; In the home appliance industry, it can be used to make the outer shell and internal structural components of household appliances such as refrigerators and washing machines; In the automotive field, it can be used to make body structural components, frames, etc.
2. Deep drawn cold-rolled steel plate
Deep drawn cold-rolled steel plate is a type of cold-rolled steel plate that has undergone deep drawing processing, resulting in higher strength and hardness, as well as better plasticity and toughness. Its hardness range is generally between HRB1/2H=85~95 and 1/4H=70~80.
Deep drawn cold-rolled sheet is mainly used to produce parts that require high strength, high hardness, and good plasticity, such as car bodies, electrical casings, etc. Due to the deep drawing process, cold-rolled steel plates can obtain finer grain structure and higher strength, thus having better formability and impact resistance.
3. Ultra deep drawing cold-rolled sheet
Ultra deep drawing cold-rolled steel plate is a type of cold-rolled steel plate processed by ultra deep drawing technology, which has higher strength, hardness, and better plasticity and toughness. Its hardness range is generally between HRB1/2H=80~90 and 1/4H=65~75.