Supply Dachang 25Cr2MoV round steel wire rod, round 25Cr2MoVA bar, fastening bolt steel

  25Cr2MoV has good intergranular corrosion resistance, excellent corrosion resistance and cold working stamping performance, strong corrosion resistance to oxidizing acids (such as nitric acid), and certain corrosion resistance to alkali solutions and most organic and inorganic acids
Chemical composition sulfur s≤ zero point zero three five
Phosphorus p≤ zero point zero three five
Chromium Cr 1
50~1
80
Vanadium V 0
15~0
30
Mo 0
25~0
35
Mechanical properties tensile strength σ b (MPa):1090
Yield strength σ s (MPa):1042
Elongation δ 5 (%):18
Reduction of area ψ (%):63
Impact toughness value α ku (J/cm2):213
Hardness: 308hb
Heat treatment specification and metallographic structure:
Heat treatment specification: 890 ℃, 30min, oil quenching; 670 ℃, 60min, tempering, air cooling

Metallographic structure: tempered sorbite

 
Spot specification of steel plant
Product name specification /mm material cold drawn polished circle Ф 3
0-10025cr2mov hot rolled round steel Ф 100-20025cr2mov hot rolled round steel Ф 20-10025cr2mov hot rolled round steel Ф 200-40025Cr2MoV
 
25Cr2MoV alloy pipe
The carbon content of 25Cr2MoVA alloy tube is 0
22~0
29, silicon 0
17~0
37, manganese 0
40~0
70, molybdenum 0
25~0
35, chromium 1
50~1
80, vanadium 0
15~0
30 ① the first two digits of the steel grade indicate the carbon content of the steel, which is expressed in a few tenths of the average carbon content, such as 40Cr and 25Cr2MoVA alloy tubes
② The main alloying elements in steel, except for some microalloyed elements, are generally expressed in percentages
When the average alloy content < At 1
5%, the steel grade generally only indicates the element symbol, but does not indicate the content
However, if it is easy to be confused under special circumstances, it can also be marked with a number " 1"， For example, steel grade "e; 12CrMoV" And "e; 12Cr1MoV"， The chromium content of the former is 0
4-0
6%, and that of the latter is 0
9-1
2%, and the other components are all the same
When the average content of alloying elements ≥ 1
5%、≥ 2
5%、≥ 3
5%…& hellip; The content shall be indicated after the element symbol, which can be correspondingly expressed as 2, 3, 4&hellip& hellip; Etc
For example, 18Cr2Ni4WA

③ Vanadium V, titanium Ti, aluminum Al, boron B, rare earth RE and other alloy elements in the steel are microalloyed elements
Although the content is very low, they should still be marked in the steel grade
For example, 20mnvb steel
Vanadium is 0
07-0
12%, boron is 0
001-0
005%

④ High quality steel should be added " at the end of the steel grade; A"， To distinguish it from ordinary high-quality steel

⑤ For alloy structural steel for special purposes, the steel grade is prefixed with (or suffix) a symbol representing the purpose of the steel
For example, 30CrMnSi steel specially used for riveting screw is represented as ml30crmnsi

Alloy pipe and seamless pipe have both relations and differences, and can not be confused

Alloy pipe is defined as steel pipe according to the production material (i
e
material)
As the name suggests, it is a pipe made of alloy; Seamless pipe is defined as steel pipe according to the production process (seamless with seams)
What is different from seamless pipe is seamless pipe, including longitudinal welded pipe and spiral pipe

25Cr2MoVA alloy pipe chemical composition:
Material csimnmocrv25cr2mova0
22~0
290
17~0
370
40~0
700
25~0
351
50~1
800
15~0
30
Material of alloy pipe:
35CrMo、16-50Mn、27SiMn、40Cr、Cr5Mo 12Cr1MoV 12Cr1MovG 15CrMo 15CrMoG 15CrMoV 13CrMo44 T91 27SiMn 25CrMo 30CrMo 35CrMoV 40CrMo 45CrMo 20G Cr9Mo 10CrMo910 15Mo3 A335P11
P22
P91
T91, Gangyan 102, st45
8-111, A106B