General carbon steel pipe
20Mn2 is an alloy structural steel pipe with medium strength, high plasticity during cold deformation, good low temperature performance, weldability and machinability. Has medium intensity. It has high plasticity during cold deformation, good low temperature performance, and acceptable weldability and machinability. Compared with carbon steel with corresponding carbon content, its hardenability is higher, and the critical hardenable diameter in oil reaches 4~15 mm. However, it has the tendency of overheating, decarburization sensitivity and temper brittleness during heat treatment. Due to its appropriate hardenability, after appropriate metal heat treatment, the microstructure is uniform sorbite, bainite or extremely fine pearlite, so it has high tensile strength.
30Mn2 structural steel pipe is an alloy steel used in the production of automobile frames and other products. It has medium plasticity during cold deformation, and its machinability and weldability are acceptable. However, the parts need to be preheated to above 200°C before welding. The process performance of wire drawing, cold heading and heat treatment is good, and the hardenability is high. The critical hardenable diameter in oil reaches 6.5~18mm. The quenching deformation is small, but there are overheating, decarburization sensitivity and tempering brittleness. After quenching and tempering, this steel has high strength, toughness and wear resistance, and its static strength and fatigue strength are also good.
Tube for Automobile Description
| Size | OD | 12.7mm-710mm |
| Thickness | 3mm-45mm | |
| Length | SRL,DRL,5.8M,11.8M | |
| Steel standard | GB/T 8162, YB/T 5035, SAE | |
| Steel Grade | 20Mn2, SAE1527, 45, 45Mn2, 4130, 4140 | |
| Process | Hot rolled/hot expansion/cold drawn/cold rolled | |
| Usage | Mechanical and General Engineering Purposes | |
| Surface | Bared Black Painting, Galvanized,Coating | |
| Proctor | Plastic cap | |
| Package | Bundles, | |
| Inspection | With Hydraulic Testing, Ultrasonic testing or X-ray Test | |
| Certificate | ISO9001;2015 | |
| Date of Delivery | Less Than 15/20/25/30/40/50/60 Days According To The Quantity | |
| Payment: | L/C or T/T | |
Structural seamless pipe
Sample blank size (mm): 25
Heat treatment:
First quenching heating temperature (℃): 840; coolant: water
Tempering heating temperature (℃): 500; coolant: water
Tensile strength σb (MPa): ≥785(80)
Yield strength σs (MPa): ≥635(65)
Elongation δ5 (%): ≥12
Reduction of area ψ (%): ≥45
Impact energy Akv (J): ≥63
Impact toughness value αkv (J/cm2): ≥78(8)
Brinell hardness (HBS100/3000) (annealed or high temperature tempering state): ≤207
Delivery status: Delivery in heat treatment (normalizing, annealing or high temperature tempering) or non-heat treatment status, the delivery status should be specified in the contract.
gnee steel pipe delivery and transportation site
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