Year1
- 产品规格：
- 齐全
Chemical composition
●Chemical composition:
Carbon: .～
Silicon: .～
Manganese:
Sulfur:
Phosphorus:
Chromium.~
Nickel:
Copper:
Vanadium:.~
Tungsten:.~
Physical properties
●Mechanical properties:
Tensile strength:
Conditional yield strength.:
Elongation (%):
Reduction of area (%):
Hardness: hot rolling heat treatment, cold drawing heat treatment
Note: In addition to tensile strength, other performance parameter test results are for reference
Sample size:
●Heat treatment specifications and metallographic structure:
Heat treatment specifications: quenching ~ ℃ oil cooling and tempering ℃℃(℃ when necessary).
●Delivery status: Hot-rolled steel is delivered in a heat-treated or non-heat-treated state. Cold-drawn steel is delivered in a heat-treated state.
Representation method
① The two digits at the beginning of the steel number indicate that the carbon content of the steel is expressed as a few ten thousandths of the average carbon content. For example, alloy pipe ② The main alloying elements in steel, except for a few micro-alloying elements, are generally Expressed in percent. When the average alloy content is .%, the steel number is generally marked with only the element symbol and not the content. However, in special cases where confusion is likely to occur, a number can also be marked after the element symbol. For example, the steel number and the former chromium content are .-.%. The latter is .-.% and all other ingredients are the same. When the average content of alloy elements is .%, .%, .%, the content should be indicated after the element symbol. The content can be expressed as,, etc. accordingly. For example.
③Alloying elements such as vanadium, titanium, aluminum, boron, and rare earth r in steel are all microalloying elements. Although the content is very low, they should still be marked in the steel grade. For example, in steel. Vanadium is .-.% and Boron is .-.%.
④High-grade high-quality steel should be distinguished from general high-quality steel at the end of the steel number.
⑤Special-purpose alloy structural steel steel numbers are preceded (or suffixed) with a symbol representing the purpose of the steel type. For example, the special steel grade for rivet screws is expressed as.
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