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Product Overview
Introduction To Engineering Steel 31
MOKSH TUBES & FITTINGS LLP is a manufacturer, supplier, exporter, importer, and stockist of a wide range of EN31 steel products including bars, rods, sheets, plates, forgings, and custom-engineered components.
EN 31, is a high carbon, chromium-containing alloy steel known for its exceptional hardness, wear resistance, and high tensile strength. It is widely used in engineering applications where toughness, abrasion resistance, and fatigue strength are critical. This alloy is often employed for making components that undergo heavy mechanical stress such as bearings, shafts, gears, and high-wear machine parts.
Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon | 1.00 – 1.10 |
| Silicon | 0.10 – 0.35 |
| Manganese | 0.40 – 0.70 |
| Chromium | 1.40 – 1.65 |
| Sulfur | ≤ 0.035 |
| Phosphorus | 0.035 max |
Technical Composition
Physical Properties
| Property | Imperial | Metric |
|---|---|---|
| Density | 0.284 lb/in³ | 7.85 g/cm³ |
| Melting Point | 2475 – 2550 °F | 1358 – 1400 °C |
| Modulus of Elasticity (Tension) | 29,000 ksi | 200 GPa |
| Modulus of Elasticity (Torsion) | 11,500 ksi | 79 GPa |
| Poisson’s Ratio | 0.27 | — |
| Thermal Conductivity | 44 W/m·K | 44 W/m·K |
| Specific Heat Capacity | 460 J/kg·K | 460 J/kg·K |
Mechanical Properties
| Property | Annealed | Hot-Finished | Cold Drawn | Hot-rolled | Sheet |
|---|---|---|---|---|---|
| Tensile Strength (ksi / MPa) | 90–115 ksi / 620–793 MPa | 95–120 ksi / 655–827 MPa | 100–130 ksi / 690–896 MPa | 90–110 ksi / 620–758 MPa | — |
| Yield Strength (0.2%) | 55–70 ksi / 379–483 MPa | 60–95 ksi / 414–655 MPa | 65–105 ksi / 448–724 MPa | 50–75 ksi / 345–517 MPa | — |
| Elongation (%) | 10–18 | 10–15 | 8–15 | 15–20 | — |
| Brinell Hardness (3000 kg) | 180–230 | 200–260 | 230–280 | 180–240 | — |
| Rockwell Hardness (B / C) | 80–95 B | 85–95 B / 20–30 C | 90–60 C | 80–90 B | — |
Products in Engineering Steel 31
Engineering Steel 31 is typically available in:
Engineering Steel 31 products are produced to the following global standards:
Uses and Advantages
Exceptional hardness and wear resistance after heat treatment
High tensile and yield strength suitable for heavy load applications
Good machinability in annealed condition
Excellent fatigue strength and toughness
Suitable for parts subjected to heavy impact and stress
Applications of Engineering Steel 31
Engineering Steel 31is extensively used in industries requiring high wear resistance, toughness, and mechanical strength:
Automotive and Engineering
Manufacture of gears, shafts, spindles, crankshafts, and bearings due to its high strength and wear resistance.
Tooling and Dies
Used for making dies, punches, cutting tools, and other tooling parts that require high hardness.
Machinery Components
Suitable for heavy-duty machine parts subjected to cyclic loading and wear such as rollers, valve parts, and camshafts.
Agricultural Equipment
Ideal for components like ploughshares, harrows, and tractor parts that face abrasive environments.
Manufacturing Industry
Shafts, pins, bolts, and various machine parts where fatigue resistance is essential.
WHY CHOOSE US?
FAQ's
What is EN31 steel and what are its key characteristics?
EN31 is a high carbon, chromium containing alloy steel recognized for its exceptional hardness, wear resistance, and high tensile strength. It is widely used in applications that demand toughness, abrasion resistance, and fatigue strength. Components such as bearings, shafts, gears, and high-wear machine parts are commonly manufactured from EN31 due to its ability to withstand heavy mechanical stress while maintaining durability and performance.
What are the chemical and mechanical properties of EN31 steel?
The chemical composition of EN31 includes 1.00–1.10% carbon, 1.40–1.65% chromium, 0.40–0.70% manganese, 0.10–0.35% silicon, and low levels of sulfur and phosphorus. It exhibits tensile strength ranging from 90–130 ksi (620–896 MPa), yield strength between 50–105 ksi (345–724 MPa), and elongation of 8–20% depending on the condition. EN31 also offers Brinell hardness of 180–280, excellent fatigue strength, and maintains machinability in its annealed state, making it ideal for precision engineered components.
What EN31 steel products are supplied by MOKSH TUBES & FITTINGS LLP?
MOKSH TUBES & FITTINGS LLP offers a comprehensive range of EN31 products including round bars, flat bars, hex bars, square bars, sheets, plates, coils, strips, seamless and welded pipes, tubes, flanges, fittings, fasteners, forgings, and custom engineered components. These products are manufactured to international standards and can be supplied in annealed, hot finished, cold drawn, or heat treated conditions to meet various industrial specifications.
What are the main applications of EN31 steel?
EN31 steel is extensively used in industries that require high wear resistance, mechanical strength, and fatigue durability. In automotive and engineering sectors, it is used for gears, shafts, spindles, crankshafts, and bearings. Tooling and die making industries rely on it for punches, dies, and cutting tools. Heavy machinery components, agricultural equipment such as ploughshares and tractor parts, and manufacturing industry components like pins, bolts, and rollers also commonly use EN31 steel due to its ability to endure high stress and abrasive conditions.
Why choose MOKSH TUBES & FITTINGS LLP for EN31 steel products?
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, exporter, importer, and stockist of EN31 steel products. With expertise in heat treatment, customization, and precise quality control, the company ensures consistent material performance. Customers benefit from rigorous testing, global sourcing of premium raw materials, prompt delivery, competitive pricing, and technical support for selecting the right grades and processes, making MOKSH TUBES & FITTINGS LLP a reliable partner for EN31 steel solutions.
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