Guangzhou Changfeng Steel Co., LTD
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Tempering Alloy Tool Engineering Steel Round Bar 1.6511 / SAE4340
Equivalent grades:
| GB(China) | DIN(German) | AISI(USA) | JIS(Japan) |
| 40CrNiMo | 1.6511 | SAE4340 | SNCM439 |
Chemical composition(%):
| C | Si | Mn | S | P | Cr | Mo | Ni |
| 0.38~0.43 | 0.15~0.35 | 0.60~0.80 | ≤0.040 | ≤0.035 | 0.70~0.90 | 0.20~0.30 | 1.65~2.00 |
Heat treatment:
Quenching 850 degrees; cooling way: oil cooling;
tempering temperature of 600 degrees; cooling way: oil cooling;
Steel annealing or high temperature tempering supply state Brinell hardness GBW ≤269.
Available size(mm):
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 10-700 | 155-2200 | 3000-6000 | 10-300 | 3000-6000 |
Feature:
It has high strength, toughness and excellent quenching and anti-overheating stability, but the white point is highly sensitive and has a temper brittleness.The welding property is poor, before welding, it needs to be preheated by high temperature. After welding, the stress should be eliminated and applied after adjustment.
Applications:
Important parts for high production strength, good plasticity, and special functional requirements after nitride disposal, such as shaft, gear, fasteners, etc.
Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than 250 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft.Gear, etc.
It can also be used for operating temperature over 400 ℃ of rotor shaft and blade, etc.
It can also be used to make important parts for special performance after nitride treatment, and can be used in high strength steel after low temperature tempering or after isothermal quenching.
Delivery status:
Delivery in heat treatment (positive fire, annealing or high temperature tempering) or not heat treatment.
Delivery time:
For abundant stock, 15-20 days.For customized products, 30-50 days.
About us:
Guangzhou ChangFeng Steel co., Ltd has a lot of experienced and competent elites and is capable of offering the best service after years of development.
Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services.
Our all products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.
Our company keeps the principle of "sincerely cooperation, endless striving for perfection".We desire to establish the long-term mutual beneficial and win-win relation with importers all over the word.
Product photos: