Best SCM 420 Alloy Steel Round Bar Manufacturers & Suppliers in Mumbai – High Quality Alloy Steel Round Supply
At Titan Steel, Mumbai Find the best SCM 420 Alloy Steel Round Bar Manufacturers & Suppliers in Mumbai offering premium-grade bars for construction, engineering, and industrial applications. Get high-strength, precision-finished alloy steel round bars with assured quality, competitive pricing, and on-time delivery from reliable manufacturers in Mumbai.
SCM420 Grade Introduction:
SCM420 Grade Introduction: SCM420 is an alloy steel known for its high hardenability, temper resistance, good weldability, and machinability. With excellent cold plastic strain capacity and reduced cold cracking tendencies, SCM420 is ideal for parts requiring high wear resistance such as gears, shafts, and high-pressure pipes. It is commonly used in carburized structural steel applications.
SCM420 Grade Applications: SCM420 case-hardening steel is widely used for gears, cogwheels, and various open-die steel forgings for general engineering purposes. The material is often supplied in different sizes and can be customized based on specific composition needs.
Equivalent Grades:
- GB 20CrMo
- JIS SCM420
- ASTM 4118
- DIN 25CrMo4
Equivalent Grades for EN43B – BRIGHT BAR:
- ASTM: A510
Additional Grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN47, EN353, IS2062, 42Crmo4, OHNS, HCHCR, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.
Chemical Composition:
| Element | Content (%) |
|---|---|
| C | 0.18-0.23 |
| Mn | 0.60-0.85 |
| P | ≤ 0.03 |
| S | ≤ 0.03 |
| Cr | 0.90-1.20 |
| Mo | 0.15-0.30 |
| Ni | ≤ 0.025 |
| Cu | ≤ 0.03 |
| Si | 0.15-0.35 |
Mechanical Properties:
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥ 885 |
| Yield strength (MPa) | ≥ 685 |
| Elongation rate (%) | ≥ 12 |
| Section shrinkage (%) | ≥ 50 |
| Impact energy (J) | ≥ 78 |
| Impact toughness (J/cm²) | ≥ 98 |
| Hardness (HB) | ≤ 197 |
SCM420 Hardness: The typical hardness ranges between 352 and 362 HB.
Heat Treatment: SCM420 undergoes final heat treatment followed by a suitable drawing pass.
Hardening Process:
- 1st Oil Cooling: 850~900℃
- 2nd Oil Cooling: 800~850℃
Tempering: The tempering process is carried out at 150-200℃, followed by air cooling.
Physical Properties:
| Property | Value |
|---|---|
| Modulus of Elasticity (N/mm²) | 210 × 10³ |
| Density (g/cm³) | 7.85 |
| Thermal Conductivity (W/m.K) | 20.0 |
Thermal Properties: Thermal conductivity: 20.0 W/m.K
Forging Properties: Hot forming temperatures range from 1100℃ to 850℃.
Stress Relieving: Stress relief heat treatment is performed after cold drawing in a controlled atmosphere.
Normalizing: Normalize SCM420 steel at 850-900℃ with air cooling.
Annealing: Annealing is conducted at 850℃ followed by furnace cooling.
Welding: SCM420 exhibits good weldability with excellent machining and cutting properties, making it highly suitable for a range of manufacturing processes.
Titan Steel & Engineers Related Products:
Carbon Steel, Alloy Steel, Bright Steel, Spring Steel, Die Steel & Tool Steel, Special Alloy Steel
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