12Cr1MoV alloy steel round bar

12Cr1MoV alloy steel round bar is according to the production of materials to define, as the name suggests is made of alloy bar. More informational about 12Cr1MoV alloy steel round bar, please see the following:

12Cr1MoV alloy structural steels. Unified digital code: A31132.
Standard: GB/T3077-1999

12Cr1MoV alloy chemical composition:

12 cr1mov steel mechanical properties:
Lala intensity (sigma b/MPa) : ≧ 490 yield point (sigma s/MPa) : ≧ 245
Break elongation (delta 5 / %) : ≧ 22 reduction of area (bits / %) : ≧ 50
Shock absorption function (Aku2 / J) : ≧ 71 impact toughness values of alpha kv (J/cm2) : p, 88 (9)
Brinell hardness (HBS100/3000) or high temperature tempering, annealing state) : ≦ 179 main features

Compared with 12 Cr1MoV steel, the steel has higher strong oxidation resistance and heat resistance. This steel creep limit and lasting value is very close, and in the case of persistent stretching with high plasticity; Technology of steel with good weldability, but before welding, need to preheat to 300 ℃, need in addition to the stress after welding processing. Main application for this kind of steel after normalizing and high temperature tempering is used, to manufacture high voltage equipment in working temperature does not exceed 570 ~ 585 ℃ hot steel pipe, tube, coil and other corresponding forgings.

1) steel grade at the beginning of the two figures show that the carbon content of steel, with the average carbon content per few said, such as cr, 40 25 cr2mova alloy pipe

(2) main alloy element in steel, in addition to the individual microalloy element, usually expressed as a percentage. When the average alloy content < 1.5%, generally only mark symbol in the steel grade, and not indicate content, but in special cases, easy to cause confusion, after the element symbol can be labeled with Numbers "1", such as steel grade "12 crmov" and "12 cr1mov", the former chromium content is 0.4 0.6%, which is 0.9-1.2%, all the rest of the ingredients are the same. When the average alloy element content of 1.5% or higher, or 2.5%, 3.5% or more... , behind the symbol should be marked content, can be said for 2, 3, 4... And so on. For example, 18 cr2ni4wa.

(3) of the steel vanadium V, Ti, aluminum, titanium, boron, rare earth and alloy elements such as RE B, micro alloying elements, although the content is very low, still should be in steel grade drawings. 20 MNVB steel, for example. Vanadium is 0.07-0.12%, boron is 0.001-0.005%.

(4) advanced high-quality steel should be at the end of the steel grade "A", to distinguish it from high quality steel in general. As for special purposes

(5) of the alloy structural steel, steel grade (or suffix) on behalf of the steel grade USES symbols. Such as riveting screw dedicated 30 crmnsi steels, steel grade is expressed as ML30CrMnSi.

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