SCM415 is a low-alloy chromium-molybdenum steel defined by the Japanese Industrial Standard (JIS). It is widely used in engineering and industrial applications due to its excellent mechanical properties and heat treatment capabilities. Below are the equivalent materials available across different standards and regions.
Table of contents
- SCM415 Chromoly Chemical Composition
- SCM415 Steel Mechanical Properties
- SCM415 Equivalent Materials
- Physical Properties of SCM415 Steel
- Annealing of SCM415 Alloy Steel
- Hardening of Acero SCM415
- Tempering of Case-Hardened SCM415
- Forging of X30WCRV93KU Grade
- Thermal Properties of JIS G4105 SCM415
- Hardness of SCM415 Material
- Density of 15CrMo
- Fatigue Strength of DIN 1.7262
- What is SCM415 Steel?
- Heat Treatment Criteria for 15CrMo
- Surface Finish Options for SCM415
Chemical Composition of SCM415
DIN 1.7262 – High Quality Quenched and Tempered Steel
DIN 1.7262 is a high-quality quenched and tempered steel that undergoes specific heat treatment processes to enhance its mechanical properties. This includes improved hardness, ductility, and strength, making it ideal for structural and mechanical applications where reliability is crucial.
Mechanical Properties of SCM415 Steel
| Elastic Modulus | Bulk Modulus | Tensile Strength | Yield Strength |
|---|---|---|---|
| GPa | GPa | MPa | MPa |
| 190–210 | 140 | 655 | 415 |
Equivalent Materials for SCM415
| Japan | China | France | Italy | Germany | England |
|---|---|---|---|---|---|
| JIS | GB | AFNOR | UNI | DIN, WNr | BS |
| SCM415 | 15CrMo | 15CD4.05 | X30WCRV93KU | 15CrMo | 1.7262 | 1501-620 | Cr31 |
Physical Properties of SCM415 Steel
| Specific Heat (J/kgK) | Temperature (°C/F) | Thermal Conductivity (W/mK) | Modulus of Elasticity (kN/mm²) |
|---|---|---|---|
| 43 | 44 | 14 | 321 |
Annealing of SCM415 Alloy Steel
| Annealing Temperature | 800–850°C (1472–1562°F) |
|---|
Carburizing Hardening of SCM415 Chromoly Steel
SCM415 chromoly steel is often processed through carburizing hardening to improve wear resistance and fatigue strength. This process creates a tough, high-carbon surface layer that enhances durability and performance under stress or harsh environments.
Hardening of Acero SCM415
| Hardening Temperature | 840–875°C (1544–1607°F) |
|---|
Tempering of SCM415 Case-Hardened Steel
| Tempering Temperature | 500–700°C (932–1292°F) |
|---|
Yield Strength of 15CrMo is 415 MPa
The yield strength of 15CrMo steel is 415 MPa, which makes it suitable for use in boilers, pressure vessels, and high-pressure pipes. Proper forging temperature control is essential to achieve optimal mechanical properties and microstructure.
Forging Temperature of X30WCRV93KU Grade
| Forging Temperature | 840–875°C (1544–1607°F) |
|---|
Thermal Properties of JIS G4105 Grade SCM415
| Thermal Conductivity (@100°C) | 296 BTU in/hr.ft².°F | 42.6 W/mK |
|---|---|---|
| Thermal Expansion Coefficient (@0–100°C/32–212°F) | 6.78 µin/in°F | 12.2 µm/m°C |
Hardness of SCM415 Material
| Hardness | 28–34 HRc |
|---|
SCM415 Melting Range is 1382–1529°C
The melting range of SCM415 is critical for ensuring proper heat control during manufacturing and for assessing its structural integrity at high temperatures. The density of 15CrMo ranges between 7.8–7.9 g/cm³, typical for low-alloy steels composed mainly of iron.
Density of 15CrMo
| Density | 7.8–7.9 g/cm³ |
|---|
High Rigidity of X30WCRV93KU Grade
The high rigidity of X30WCRV93KU allows it to withstand heavy loads without deformation. Chromium and molybdenum in its composition enhance tensile and yield strength, making it ideal for pressure vessels and high-stress applications.
Fatigue Strength of DIN 1.7262
| Fatigue Strength | 275 MPa |
|---|
What is SCM415 Steel?
SCM415 is a high-quality quenched and tempered alloy structural steel. It belongs to the category of medium carbon steels that can be oil-quenched and surface-treated for enhanced performance in various engineering applications.
Heat Treatment Conditions for 15CrMo
- Ac: 770–835°C
- Ar: 770–700°C
- Ms: 410°C
Surface Finish Options for SCM415 Alloy Steel
- Black Surface
- Grounded
- Peeled / Turned
- Polished
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