High-performance alloy steel designed for applications requiring a hard, wear-resistant surface with a tough and ductile core.
TSI Metals Private Limited supplies 20MNCR5 steel for demanding engineering applications where surface hardness, fatigue performance, and dimensional reliability are important.
Key Properties
| Property | Specification |
|---|---|
| Steel Grade | 20MNCR5 |
| Steel Type | Case Hardening Steel |
| Standard | EN 10084 |
| Material Number | 1.7147* |
| Carbon | 0.17–0.22% |
| Silicon | 0.15–0.40% |
| Manganese | 1.10–1.40% |
| Chromium | 1.00–1.30% |
| Phosphorus | ≤ 0.025% |
| Sulphur | ≤ 0.035% |
| Heat Treatment | Carburizing / Hardening / Tempering |
| Element | Composition |
|---|---|
| C – Carbon | 0.17–0.22% |
| Si – Silicon | 0.15–0.40% |
| Mn – Manganese | 1.10–1.40% |
| Cr – Chromium | 1.00–1.30% |
| P – Phosphorus | ≤ 0.025% |
| S – Sulphur | ≤ 0.035% |
The manganese and chromium alloying elements contribute to the material’s hardenability, while the relatively low carbon content makes the grade suitable for case-hardening processes.
TSI Metals Private Limited can provide material documentation and applicable certification according to the supplied product and specification.
20MNCR5 is commonly used for engineering components where surface hardness and wear resistance are important.
Gears
Used in transmission and power-transfer components.
Gearbox Components
Suitable for components exposed to repeated loading and surface contact.
Pinions
Used in gear-drive applications requiring wear-resistant surfaces.
Shafts
Suitable for selected mechanical and transmission components.
Axle Components
Used in selected automotive and engineering applications.
Transmission Components
Suitable for components requiring a combination of surface hardness and core toughness.
20MNCR5 is primarily used as a case-hardening steel.
A typical processing route involves:
01 — Carburizing
Carbon is introduced into the surface layer to increase the surface carbon content.
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02 — Hardening
The carburized component is hardened to develop the required surface hardness.
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03 — Tempering
Controlled tempering is carried out to achieve the required balance of hardness and toughness.
Hard Surface + Tough Core
This combination provides the material with characteristics suited to components exposed to wear, contact stresses and repeated loading.
Actual heat-treatment parameters should be selected according to component geometry, section size, required properties, equipment and applicable standards.
Depending on stock availability and customer requirements, 20MNCR5 can be supplied in suitable engineering forms such as:
Round Bars
Suitable for shafts, gears, and machined components.
Bright Bars
For applications requiring accurate dimensions and surface finish.
Forged Bars
For demanding engineering components requiring forged material.
Cut Pieces
Material can be prepared according to required dimensions where cutting services are available.
Custom Requirements
Share your required size, quantity, condition, and application with the TSI Metals team.
Actual available forms and sizes should be confirmed with TSI Metals Private Limited before publishing as a fixed stock list.
20MNCR5 may be supplied in suitable conditions according to the application and material requirements.
Annealed / Soft Condition
For improved machinability and further processing.
As Supplied
According to the applicable material specification and certificate.
Heat-Treated Condition
Where applicable and specifically required.
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