Products above ST13 are used in industries that require low-alloy plates, such as the automotive industry, fuel tanks for diesel engines, etc. The actual type to be used depends on the drawing requirements.
The difference between ST12 and SPCC: The physical properties of the two products are the same, but the return and exchange methods are different. The product drawing properties of ST12 material are relatively better than SPCC.
The meaning of Japanese JIS standard materials
SPCC---S stands for Steel, P stands for Plate, C stands for Cold, and C stands for Commercial, which is the Japanese JIS standard.
If you need to ensure the compressive strength, add T at the end of the model number, which is: SPCCT.
SPCD---indicates that cold-rolled alloy steel metal sheets and steel chains for stamping dies are equivalent to my country's 08AL (13237) high-quality carbon steel.
SPCE---indicates cold rolled alloy steel metal sheets and steel chains for deep drawing, which is equal to my country's 08AL (5213) low alloy plate steel.
If you need to ensure non-timeliness, add N to the end of the model number to indicate SPCEN.
Cold rolled alloy steel sheet and steel chain heat treatment number: quenching condition is A, standard heat treatment is S, 1/8 strength is 8, 1/4 strength is 4, 1/2 strength is 2, full strength is 1. Surface production Processing number: D for matte finish rolling and B for bright finish rolling.
For example, SPCC-SD indicates that cold-rolled carbon metal sheets are generally used for standard heat treatment and matte finish rolling.
Another example is SPCCT-SB, which specifies cold-rolled carbon metal sheets that standardize heat treatment, brightness processing, and ensure physical properties.
Another example is SPCC-1D, which represents a hard matte finish-rolled cold-rolled alloy steel sheet.
The expression method of steel model for mechanical system is: S + carbon content + letter number (C, CK), in which the carbon content is expressed by the middle value * 100, the letter C indicates carbon, and the letter K indicates nitriding steel. For example, the carbon content of carbon steel coil S20C is 0.18-0.23%.
The meaning of China GB standard materials
Most of them are divided into following models:
Q195, Q215, Q235, Q255, Q275, etc.
Q indicates the yield limit of stainless steel plates. The pinyin letters of the word "Qu" are English letters. 195, 215, etc. indicate the yield limit values.
In terms of composition, high carbon steel models:
The larger the Q195, Q215, Q235, Q255, and Q275 models, the higher the carbon content and manganese content, and the smoother the plastic deformation will be.
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