Detailed Introduction
Model : 4340/1.6511/36CrNiMo4/40CrNiMo/40XHM
Application : alloy steel
Content :
|
Grade |
C(％) |
Si(％) |
Mn(％) |
P(％) |
S(％) |
Cr(％) |
Ni(％) |
|
4340 |
0.38～0.43 |
0.15～0.35 |
0.60～0.80 |
≤0.035 |
≤0.04 |
0.70～0.90 |
1.65～2.00 |
|
Grade |
C(％) |
Si(％) |
Mn(％) |
P(％) |
S(％) |
Cr(％) |
Ni(％) |
|
1.6511 |
0.32~0.40 |
≤0.4 |
0.50~0.80 |
≤0.025 |
≤0.035 |
0.90~1.20 |
0.90~1.20 |
|
Grade |
C(％) |
Si(％) |
Mn(％) |
P(％) |
S(％) |
Cr(％) |
Ni(％) |
|
36CrNiMo4 |
0.32~0.40 |
≤0.4 |
0.50~0.80 |
≤0.025 |
≤0.035 |
0.90~1.20 |
0.90~1.20 |
|
Grade |
C(％) |
Si(％) |
Mn(％) |
P(％) |
S(％) |
Cr(％) |
Ni(％) |
|
EN24 |
0.36～0.44 |
0.10～0.40 |
0.45～0.70 |
≤0.035 |
≤0.04 |
1.00～1.40 |
1.30～1.70 |
Description of AISI 4340:
AISI 4340 is an alloy structural steel and also a gear steel.
Refer to corresponding steel number:
GB steel number :40CrNiMoA,
German DIN steel Number 36CrNiMo4,
German DIN material number 1.6511,
French NF standard 40NCD3,
Japanese JIS standard SNCM439,
British BS standard 816M40,
American AISI/ASTM4340,
American UNS standard G43400
Features of AISI 4340:
It has high strength, toughness and excellent harden-ability and anti-overheating stability, but it has high white spot sensitivity and temper brittleness.
Poor weld-ability, need to be preheated by high temperature before welding, need to eliminate stress after welding, use after conditioning.
Mechanical properties:
Elongation δ5 (%):≥12
ψ (%):≥55
Impact energy Akv (J):≥78
Impact toughness value α kV (J/cm2):≥98(10)
Sample size: sample blank size is 25mm
Heat treatment:
(Quenching 850 degrees;Coolant: oil;Tempering temperature 600 degrees;Coolant: water, oil);
Brinell hardness GBW of steel annealed or tempered at high temperature is less than or equal to 269;
Delivery status:
Delivery in heat treatment (normalizing, annealing or high temperature tempering) or non-heat treatment condition shall be indicated in the contract.
Application of AISI 4340:
l It can be used for important quench and tempering parts requiring good toughness, high strength and large size, such as heavy machinery shaft with high load, turbine shaft with diameter greater than 250mm, helicopter rotor shaft, turboshaft, blade of turbojet engine, transmission parts with high load and crankshaft fasteners.
Gear, etc.;Can also be used to operate the temperature of more than 400℃ rotor shaft and blade;It can also be used to make important parts with special performance requirements after nitriding treatment, and can be used as ultra-high strength steel after low temperature tempering or isothermal quenching.
l Manufacture of important parts with high strength and good plasticity, and manufacture of important parts with special functional requirements after nitriding treatment, such as shafts, gears, fasteners, etc.
Solar Special Steel International Limited
Contact Person :Wendy
Telephone:+86 18688633122 whatsapp&wechat
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Email:ss@solarsteel.cn
