ASTM 1040 | BS EN8/080M40 Engineering Steel
Port: Hu nan
engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel
Alloy Structural Steel, Alloy Tool Steel, Carbon Structural Steel, Carbon Tool Steel, Bearing Steel, Spring Steel ,Stainless Steel, Refractory Steel, Roll Steel, Pinion Steel. Additionally, the company also has the capacity to forge round steel, steel flat, square steel, module, shaft and roller
1: EN8 steel introduction
EN8 also know as 080M40. Unalloyed medium carbon steel. EN8 is a medium strength steel, good tensile strength. Suitable for shafts, stressed pins, studs, keys etc. AISI 1040.
Available as normalized or rolled. EN8 is supplied as round drawned, round hot rolled, hexagon, square, flats and plate. EN8 is usually supplied untreated but can be supplied to order in the normalized or finally heat treated (quenched and tempered to "Q" or "R"properties for limiting ruling sections up to 63mm), which is adequate for a wide range of applications. Please refer to our selection guide for comparisons.
| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 699 | JIS G4051 |
DIN (W-Nr.) EN 10083-2 |
AISI/ASTM ASTM A20 |
EN / BS |
| Grade | / | / | / | 1040 | EN8/080M40 |
| Grade | C | SI | Mn | P | S |
|
1040 |
0.37 - 0.44 |
/ |
0.6 - 0.9 |
0.04 max |
0.05 max |
|
EN8/080M40 |
0.36-0.44 |
0.10-0.40 |
0.60-1.00 |
0.05 |
0.005 |
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block |
Thickness 6mm-500mm |
|
|
Width 20mm-1000mm |
||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 30-45 days | |
| Application | EN8 are used for the manufacture of parts such as general-purpose axles and shafts, gears, bolts, studs, crankshafts, couplings and cold headed parts. | |
6: Heat Treatment of EN8 Carbon Steel
EN8 steel is usually supplied untreated but also be able to be supplied to order in the normalized or finally heat treated, which is adequate for a wide range of applications.
Tempering – Carbon steel EN8 or 080m40 can be tempered at a heat of between 550°C to 660°C (1022°F-1220°F), heating for about 1 hour for every inch of thickness, then cool in oil or water.
Normalising of EN8 bright mild steel takes place at 830-860°C (1526°F-1580°F) then it is cooled in air.
Quenching: in oil or water after heating to this temperature will harden the steel.
