EN31 Steel is a quality High Carbon Alloy Steel which offers a high degree of hardness with compressive strength and abrasion resistance. SIddhgiri Tubes are well known EN31 Bright Round Bars and Rods Manufacturers, Stockists, Suppliers, and Exporters. We are only manufacturing from prime quality billets and blooms. The wide array of EN31 Round and Flat Bars which we manufacture for our clients are of high quality and these round bars are used for making machineries and OEM Auto components. These En 31 Hex and Square bars have been made keeping in mind the quality parameters which have been set by the industry in the market. EN31 Round Bar are always export and supply with the test certificates and can be supplied in bulk quantity as well as retail quantity as per buyers needs. EN31 alloy Steel round bars are supplied by us to various industries globally.
Heat uniformly and thoroughly at the selected tempering temperatures and hold for at least one hour per inch of total thickness.
Heat uniformly to 800°C, equalise, then furnace cool. (Hardness about 229 Brinell).
If machining operations have been heavy or if the tool has an unbalanced section, remove stresses before hardening by heating up to 700°C, equalise, then cool slowly.
Heat uniformly to 800/820°C until heated through. Allow 30 minutes per inch of ruling section and quench immediately in oil.
Forge at 1000°/1050°C. Heat slowly, allowing sufficient time at the forging temperature for the steel to be thoroughly soaked through. Re-heat as often as necessary to keep the temperature above 850°C. After forging cool very slowly, preferably in a furnace.
|Specification||100Cr6, AISI SAE E52100, 100Cr6, 2258, 100C6|
|Round Bar Size||Diameter: 3-~800mm|
|Square Bar size||4 to 100mm|
|Flat Bar Size||Thickness: 2 -100mm|
|Width: 10 to 500mm|
|Hex Bar Size||2-100mm A/F|
|Rectangles Size||33 x 30mm to 295 x 1066mm|
|Hollow Bar||32mm OD x 16mm ID to 250mm OD x 200mm ID)|
|Angle Bar Size||3mm*20mm*20mm~12mm*100mm*100mm|
|Channel Bar||80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness|
|Section||3.0 to 12.0mm thickness|
|Billet Size||1/2″ to 495mm Diameter|
|Finish||Cold (bright) drawn, centreless ground,smooth turned, Rough Turned, Bright, peeled, hot rolled,
hot rolled annealed, slit rolled edge, Polish, Grinding, Centreless Ground & Black
|Tolerance||K9, K10, K11, K12, H8, H9, H10, H11, H12, H13, or as per clients’ requirements|
|Surface||Polished, Bright, Cold Drawn, Hot Rolled Pickled, Sand Blasting Finished, Hairline|
|Condition||Hardened & Tempered, Annealed|
|Technique||en31 Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rods|
|Processing||Bar cutting to 650mm|
|Form||en31 Welding Rod, Round, Round Rod, Rings, Hollow, Rod, T-Bar, Channel Bar, Flat Bar, Square, Blocks,
Precision Ground Bar, Triangle, Rectangle, Hex (A/F), Threaded, Ingot, I/H Bar, Half Round Bar, Profiles, Billet, Forging etc.
|En31 Steel Bars and Rods Conforms To NACE MR0175/ISO 15156|
|BRITISH BS 970:1991||535A99|
|BRITISH BS 970:1955||EN31|
|AMERICAN SAE / AISI||52100|
|Carbon||0.95 / 1.10|
|Manganese||0.40 / 0.70|
|Silicon||0.10 / 0.35|
|Chromium||1.20 – 1.60|
|Soft annealing °C||Cooling||Hardness HB|
|Stress-relief annealing °C||Cooling|
|600 – 650||Furnace|
|1st pre-heating °C||2nd and 3rd||Hardening °C||Quenching||Tempering °C||Hardness after Teperature HRC|
|up to approx. 400 in an air-circulating furnace||800 and 900||800-820||810 °C Oil ,Quench||at least twice 150-200||61 – 63|
|EN-31 Steel Polished Round Bar||EN-31 Steel T-Bar|
|EN-31 Steel Square Bar||EN-31 Steel Triangle Bar|
|EN-31 Steel Flat Bar||EN-31 Steel Hex Bar|
|EN-31 Steel Hollow Bar||EN-31 Steel Round Bar|
|EN-31 Steel Precistion Ground Bar||EN-31 Steel Threaded Bar|
|EN-31 Steel Rods||EN-31 Steel Half Round Bar|
|Type||SIZES (mm)||SIZES (Inches)||ISO Tolerance|
|Cold Drawn and Polish||3.00 – 75.00||1/8″ – 3.00″||h8-h9-h10-h11|
|Cold Drawn and Ground||10.00 – 75.00||5/6″ – 2.50″||h8-h9-h10-h11|
|Peeled and Polished||40.00 – 150.00||1.50″ – 6.00″||h11, h11-DIN 1013|
|Peeled and Ground||20.00 – 50.00||3/4″ – 2.00″||h9-h10-h11|
|Cut to size on request (tolerance +2/-0 mm). Standard lengths of en31 Bars 2000 mm up to 6000 mm available|
|BD||Bright drawn||SRE||Slit rolled edge|
|CG||Centreless ground||HF||Hot finished|
|CF||Cold finished||HRAP||Hot rolled annealed and pickled|
|P&T||Peeled and turned||RT||Rough turned/peeled|
|ST||Smooth turned||PR||Peeled and reeled|
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EN1A EN8 EN9 EN19 EN24 EN32B EN45 EN47 EN353 EN18 EN31 SS303 SS304 SS304H SS304L SS310/310S SS316/316L SS316H SS316Ti SS317/317L SS321/321H SS347 SS410 SS416 SS420 SS430-430F SS446 SS422 SS431 SS904L SS440C A105 A350 LF2 1008 1010 1015 C35 C30 ST 52.3 1541 1140 1035 1030 F5 F9 F11 F12 F22 F91 601 625 600 718 X750 800 825 925 330 400 K500 C22 C276 B2 B3 200 201 S31803/S32205 S32750/S32760 S32950 zeron 100 Grade 2 Grade 5 Grade 7 Alloy 20 254 SMO