Hemi Metals, based in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch 20MnCr5 Round Bars. These bars are celebrated for their impressive hardenability, wear resistance, and suitability for case-hardening applications. With a keen emphasis on precision, surface finish, and consistent metallurgical properties, Hemi Metals ensures that their 20MnCr5 bars meet the rigorous global standards required in the engineering and automotive sectors. Utilizing advanced melting, rolling, and heat-treatment methods, they guarantee dependable core toughness and high surface hardness after carburizing. Customers trust Hemi Metals for durable, high-performance alloy steel bars that excel in demanding mechanical and structural applications.
20MnCr5 Round Bars are composed of about 0.17–0.22% carbon, 1.10–1.40% manganese, and 0.90–1.20% chromium, along with trace amounts of silicon, phosphorus, and sulfur. This alloy boasts excellent case-hardening capabilities, resulting in a hard, wear-resistant outer layer paired with a tough, shock-resistant core. In terms of mechanical properties, 20MnCr5 offers impressive tensile strength, reliable fatigue resistance, and high surface hardness after processes like carburizing and quenching. It also maintains good machinability in its annealed state and shows excellent dimensional stability during heat treatment, making it perfect for precision components.
|
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 |
Yes, 20MnCr5 Round Bars can be used for underground applications due to their high strength and durability.
Yes, 20MnCr5 Round Bars may require corrosion protection coatings for enhanced durability in harsh environments.
Choose 20MnCr5 Round Bars based on required strength, wear resistance, and application-specific environmental conditions.
20MnCr5 Round Bars find extensive use in manufacturing components that need a hard exterior and a resilient core. Common applications include gears, shafts, camshafts, crankshafts, pinions, connecting rods, sprockets, and parts for automotive transmissions. This alloy is a go-to choice for high-wear mechanical elements in automotive, industrial machinery, agricultural equipment, and heavy-duty engineering systems. Its ability to achieve high surface hardness through carburizing makes it particularly suitable for parts that face continuous friction, impact loads, and rotational stress.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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