SCM415 Alloy Steel

SCM415 whose surface are processed through carburizing hardening treatment are used for the parts which need high toughness or wear resistance, such as cylinder piston, crankshaft, gears, pin, shafts and so on.

SCM415 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is 28-34 HRc.SCM415 Annealing delivery hardenss less than 250HB.

Our supply size :

Diameter : 80 to 600 mm ;

Length : 1000 to 9000 mm ;

Our advantage :

1. High Quality, Reasonable Price

2. Over 40 Years Experience

3. ISO NQA Certificated Factory

4. Worldwide shipping

5. Emergency Orders and Fast Delivery

International Comparison of Materials

Chemical Composition(JIS G4051)

Applications

SCM415 steel is a alloy structural steel. It is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,SCM415 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing Alloy, and can be used for bending machine mould, etc

Product Features:

1. High strength in room temperature and elevated temperature.

2. High notch tolerance.

3. Simplified design for bolting configuration

Conditions of heat treatment

Annealing: 850℃ Furnace Cooling

Normalization: 850~900℃ Air Cooling

Hardening: 850~900℃ 1st Oil Cooling, 800~850℃ 2rd Oil Cooling

Tempering: 150~200℃ Air Cooling

Criterion for heat treating conditions revise:

Ac: 770~835℃

Ar: 770~700℃

Ms: 410℃

Mechanical properties

Tensile strength (kgf/mm²): ≧85

Elongation (%): ≧16

Cross section reduction rate (%): ≧40

Impact value (J/cm2): ≧7

Hardness (Hb) : 235~321

Forming Option

1 Hot rolling process

2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging

Heat-treatment Option

1 +A: Annealed (full/soft/spheroidizing)

2 +N: Normalized

3 +NT: Normalized and tempered

4 +QT: Quenched and tempered (water/oil)

Surface Option

1 Black Surface

2 Grounded: Bright but rough ; Not precision

3 Machining for plate: Bright and precision; Little turning scar

4 Peeled/Turned: Bright and precision; Little turning scar

5 Polished: Very Bright and precision size; Not turning scar

Other Services

1 Cutting: Small pieces

2 CNC Machine: Produce as your drawing

3 Package: Bare/Nylon/Canvas/Wooden

4 Payment:T/T, L/C, O/A(request credit)

5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)

Mill test certificate

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.