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We are EN31 Round Bar manufacturers and we are only manufacturing from prime quality billets and blooms. The range of EN31 Round Bars which we manufacture for our customers are of high quality and these round bars are used for making machinery and OEM Auto components. These products have been made keeping in mind the quality parameters that have been set by the industry in the market. EN31 Round Bars are always supplied with the test certificates and can be supplied in bulk quantity as well as retail quantity as per customers’ requirements. EN31 alloy Steel round bars are supplied by us to various industries.
EN31 is a very high strength steel alloy that is hardened and tempered before supplying and has nickel, chromium, molybdenum making its high tensile steel strength, with good ductility and wear resistance. With relatively good impact properties at low temperatures, EN31 is also suitable for a variety of elevated temperature applications. EN31 round bars have good internal strength and high external strength, which makes them highly wear-resistant. EN31 steel round bars offer a good combination of ductility, strength, and wear resistance. EN31 is a very high-strength alloy engineering steel.
Typical applications for EN31 steel include taps, gauges, swaging dies, ejector pins, ball, and roller bearings. It is good quality steel for wear-resisting machine parts and for press tools that do not merit a more complex quality.
- BRITISH BS 970:1991 535A99
- BRITISH BS 970:1955 EN31
- GERMAN DIN 100CR6
- FRENCH AFNOR 100C6
- SWEDISH SS 2258
- AMERICAN SAE 52100
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, OHNS, D2, D3, H-11, H-13, CW-1, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.
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The following table shows the chemical composition of EN31 steel:
|Content (%)||0.95-1.10||0.10-0.35||0.40-0.70||0.040 Max||0.050 Max||1.20-1.60|
|Tensile Strength||750 N/mm²|
|Yield Stress||450 N/mm²|
|Reduction of Area||45%|
|Modulus of elasticity||215 000 N/mm²|
Heat treatment temperatures, including the rate of heating, cooling, and soaking times will vary due to factors such as the shape and size of each EN31 component. Other considerations during the heat treatment process including the type of furnace, quenching medium, and workpiece transfer facilities.
Heat slowly to the hardening temperature of 800-820°C. Maintain until thoroughly soaked through. Plenty of time must be given for this soaking and then quench in oil.
Temper according to the purpose for which the tools are required, generally between 150°C and 300°C. Soak well at the selected temperature and soak for at least one hour per 25mm of the total thickness. Cool slowly in the air.
|NAME OF MATERIAL||COMPOSITION IN % OF WEIGHT||THERMAL CONDUCTIVITY W/M-K||DENSITY KG/M^3||MELTING POINT|
|C||Mn Si Cr S P Mg|
|En-31 IS-103 Crl||1.5||0.52 0.22 1.3 0.05 0.05 –||46.6||7810||1540|
|Thermal expansion coefficient (@ 23-280°C/73.4- 36°F, annealed)||11.9 µm/m°C||6.61 µin/in°F|
|Thermal conductivity (typical steel)||46.6 W/mk||323 BTU in/hr.ft².°F|