Chemical composition of 12cr 1mov round steel
c:0.08 ~ 0. 15Si:0. 17 ~ 0.37
Manganese: 0.40-0.70
Cr:0.90~ 1.20
Mo:0.25~0.35
V:0. 15~0.30
Mechanical properties of 12cr 1mov round steel
Sample blank size
30 mm
heat treatment
Quenching heating temperature (℃): 970; Coolant: empty
Tempering heating temperature (℃): 750; Coolant: empty
mechanical character
Tensile strength (σ b/MPa): ≥ 490
Yield point (σ s/MPa): ≥ 245
Elongation at break (δ5/%):≤22
Area shrinkage (ψ/%): ≥ 50
Impact absorption work (aku 2/j): ≥ 7 1
Impact toughness value αkv? (J/cm2):≥88(9)
Brinell hardness (HBS 100/3000) (high temperature annealing or tempering): ≤ 179.
At room temperature: allowable tensile stress (σ w/MPa): 93? Allowable bending stress (σ w/MPa): 1 12 Allowable shear stress (t/MPa): 56.
Main characteristics of 12cr 1mov round steel
Main features: Compared with 12CrMoV steel, this steel has higher oxidation resistance and thermal strength. The creep limit of this steel is very close to the permanent strength value, and it has high plasticity under the condition of permanent tension. Steel has good manufacturability and weldability, but it needs to be preheated to 300℃ before welding to relieve stress after welding.
It is a kind of steel widely used in superheater, header and main steam conduit of high pressure, ultra-high pressure and subcritical power plant boilers. At 580℃, it still has high thermal strength, oxidation resistance and high permanent plasticity. The production process is simple and the welding performance is good, but it is sensitive to normalizing cooling rate. Long-term use at 580℃ will produce the second temper brittleness caused by segregation of impurity elements such as phosphorus at grain boundaries. Pearlite spheroidization will occur after long-term use.
Four. 12cr 1mov round steel is introduced in detail.
The first two digits of (1) steel number indicate the carbon content of steel, which is expressed as a few ten thousandths of the average carbon content, such as 40Cr and 25Cr2MoVA alloy pipes.
② The main alloying elements in steel, except a few microalloyed elements, are generally expressed as a few percent. When the average alloy content is
(3) Vanadium V, titanium Ti, aluminum AL, boron B, rare earth re and other alloying elements in steel are all microalloyed elements. Although the content is very low, they should still be marked in the steel grade. Such as 20MnVB steel. 0.07-0. 12% vanadium and 0.00 1-0.005% boron.
(4) High-quality steel should be distinguished from ordinary high-quality steel by adding "A" at the end of the steel grade.
(5) Alloy structural steel for special purposes, the steel grade is preceded by (or suffixed with) a symbol representing the purpose of the steel grade. For example, 30CrMnSi steel for riveting screws, the steel number is marked as ML30CrMnSi.
There are connections and differences between alloy pipe and seamless pipe, and they cannot be confused.
Alloy pipe is defined as steel pipe according to the production material (that is, material), which is the pipe made of alloy as the name implies; Seamless pipe is defined as steel pipe according to the production process (seamless joint), which is different from seamless pipe, including straight welded pipe and spiral pipe.
12Cr 1MoV corresponds to foreign brands 16mo3. Unlike other materials that need to be preheated first, the weld should be kept warm for about 30 minutes after welding. Manganese in 16mo3 steel plate is also an important alloying element and hardenability element, which has a great influence on the toughness of weld metal. When the Mn content of 16mo3 steel plate is 3%, it is very brittle; When the Mn content of 16mo3 steel plate is 0.6 ~ 1.8%, the weld metal has high strength and toughness.
Where can I buy 12cr 1mov round steel?
Jiangyin has special steel co., ltd, Shanghai Baosteel, etc.
Above, we introduced the relevant information of 12cr 1mov round steel in detail from five aspects: chemical composition, mechanical properties, main characteristics, detailed introduction and purchase place. We know that this is one of the building materials widely used in daily production and life, and it is used in buildings because of its simple production process, high temperature resistance and excellent plasticity. Through the study of 12cr 1mov round steel from the above professional perspectives, I believe that everyone has a systematic and comprehensive understanding and hopes to help people in related industries.
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