Luois Metals, based in Houston, USA, stands out as a top manufacturer and supplier of premium 20MnCr5 Round Bars, celebrated for their remarkable case hardening properties, wear resistance, and toughness. This low-carbon alloy steel is a go-to choice for gears, shafts, and other transmission components that need a resilient core and a hard exterior. Luois Metals provides 20MnCr5 round bars in various forms—hot-rolled, normalized, or forged—while adhering to standards like EN 10084 and DIN 17210. With meticulous control over chemical composition and strict dimensional tolerances, our 20MnCr5 bars are a trusted choice in the automotive, engineering, and machinery industries.
20MnCr5 Round Bars generally consist of 0.17–0.22% carbon, 1.1–1.4% manganese, and 0.8–1.1% chromium, along with small amounts of silicon, phosphorus, and sulfur. Tailored for carburizing and case hardening, 20MnCr5 can achieve a hard surface (up to ~60 HRC) post-heat treatment while keeping a tough, ductile core. In its core state, it boasts tensile strength ranging from 600–850 MPa and yield strength around 400 MPa, depending on the heat treatment process. Its excellent machinability, impact resistance, and fatigue strength make it perfect for precision-machined components in demanding dynamic applications.
|
Element |
Content |
|---|---|
|
Carbon, C |
0.310 – 0.380 % |
|
Iron, Fe |
98.63 – 99.09 % |
|
Manganese, Mn |
0.60 – 0.90 % |
|
Phosphorous, P |
0.040 % |
|
Sulfur, S |
0.050 % |
|
Properties |
Metric |
Imperial |
|---|---|---|
|
Tensile strength, ultimate |
585 MPa |
84800 psi |
|
Tensile strength, yield |
370 MPa |
53700 psi |
|
Modulus of elasticity |
190-210 GPa |
29700-30458 ksi |
|
Bulk modulus (typical for steel) |
140 GPa |
20300 ksi |
|
Shear modulus (typical for steel) |
80 GPa |
11600 ksi |
|
Poissons ratio |
0.27-0.30 |
0.27-0.30 |
|
Elongation at break (in 50 mm) |
30% |
30% |
|
Reduction of area |
53% |
53% |
|
Hardness, Brinell |
183 |
183 |
|
Hardness, Knoop (converted from Brinell hardness) |
204 |
204 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
89 |
89 |
|
Hardness, Vickers (converted from Brinell hardness) |
192 |
192 |
|
Machinability (based on AISI 1212 steel. as 100 machinability) |
65 |
65 |
| EN Name | EN Number | DIN | JIS | UNI | BS |
|---|---|---|---|---|---|
| C35 | 1.0501 | C35, CM35 | S35C | C35 | 970 070M36 |
20MnCr5 Round Bars find extensive use in the automotive, mechanical engineering, and agricultural machinery sectors for parts that need a wear-resistant surface and robust core toughness. Common applications include gears, shafts, pinions, camshafts, crankshafts, bushings, and transmission components. This material is particularly well-suited for case hardening, which hardens the outer surface while keeping the interior ductile and impact-resistant. It performs reliably under dynamic loads, rotational stress, and sliding wear, making it a favored choice for high-performance drivetrain and motion components. Its machinability and consistent quality further enhance its appeal in various applications.
20MnCr5 Round Bars are widely used in automotive and engineering industries for manufacturing components that require high strength and durability. Common applications include the production of gears, shafts, camshafts, crankshafts and bearing components. Its excellent wear resistance and toughness make it ideal for heavy-duty machinery, including transmission and drive systems. Additionally, the alloy’s hardenability ensures superior performance in parts subjected to high stresses and fatigue, making it suitable for various mechanical and industrial applications demanding reliability and strength.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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