20crmo Alloy Steel Bar is widely used to manufacture pressure tube and fastener which is non-corrosive medium, nitrogen hidrogen medium and work under 250°C, such as vane, baffle, forging and rolled section in turbine and boiler, important carburing parts in common machine.
20CrMo alloy steel bar is one of our main products, and it has the high hardenability , temper brittleness , very good weldability , can be a good machinability and cold plastic strain. More informational about 20CrMo alloy steel bar, please see the following:
20CrMo alloy steel bar description:
Standard: GB / T 3077-1988, JIS, AISI, ASTM, GB, DIN, EN
Length: 3000mm-6000mm or as customer's requirement
Surface: Black/Bright/Polished
Technique: Hot rolled/Cold drawn/Forge
| Article | ASTM 1320, AISI 4140, AISI 1045, SCM420 etc. bars |
| Grade | ASTM 1320, AISI 4140, AISI 1045, SCM420 etc. As customized |
| Size | 80-800mm |
| Length | 5.8-6m fixed length or as customized |
| Quality assurance | Ultrasonic test, mill test certificate |
| Delivery time | 30 days |
| Packing | In bundles, seaworthy packing |
| Remark | Electric furnace + LF + VD, ESR is available |
Aplication
| locomotive industry | ship making industry |
| oil industry | machining industry |
| chemical engineering industry | electric power industry |
| automobile industry | coal feeder industry |
| aviation industry | space flight industry |
| national defense construction |
Chemical composition (%)
| Grade | C | Si | Mn | Cr | Mo |
| 42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.80 | 0.90~1.20 | 0.15~0.25 |
| 20CrMo | 0.17~0.24 | 0.17~0.37 | 0.40~0.70 | 0.80~1.10 | 0.15~0.25 |
| Tensile strength σb (MPa) |
Yield Strength σs 0.2 (MPa) |
Elongation δ 5 (%) |
Reduction of crosssection area ψ (%) |
Ballistic work Akv (J) |
Pounding toughness value αkv (J/cm2) |
Hardness (HB) | Specimen Size |
| Min 835 | Min 540 | Min 10 | Min 40 | Min 47 | Min 59 | Max 179 | 15mm |
Processing
Electric arc furnace melting→refining furnace→vacuum treatment furnace→→cast ingot→steel ingot anneal→ heating → high-speed forging, refining forging→annel,retarded cooling,air cooling→quenching and tempering treatment→finishing operation→test→finished products
FAQ
Q: Are you a trading company or manufacturer?
A: Manufacturer with factory
Q:What is the MOQ.?
A:Generally speaking, the MOQ is 1tons. but if your quantity is small and conventional, we can supply you from our stock.
Q:How to know your quality guarantee?
A:Visiting Our factory is the best way to know each other and the Third Inspection can prove our products' quality.
Q: What's your advantage?
A: We specialize in the production of special steel and constantly improve our production technology.
Q: What service do you offer?
A: Customized service for each customer, please feel free to contact us!
