| Customization: | Available |
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| After-sales Service: | Yes |
| Warranty: | 3 Years |
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1: BS EN39 steel introduction
EN39 is a 4.5% nickel, chromium, molybdenum grade, suitable for case hardening to give a case resistant surface with a high core strength up to 1310 N/mm2. This grade is commonly supplied as round bar. EN39A and EN39B are common standards for this grade.
2: BS EN39 steel equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 3077 | JIS G4105/JIS | DIN (W-Nr.) EN 10250 |
AISI/ASTM ASTM A29 |
BS 970 |
| Grade | 15NiCrMo16-5/1.6723 | EN39/835M15 |
3: BS EN39 steel chemical composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 15NiCrMo16-5/1.6723 | 0.12-0.18 | 0.50 | 0.50 | 0.03 | 0.025 | 1.00-1.40 | 0.15-0.45 | 4.00-4.50 |
| EN39/835M15 | 0.12-0.18 | 0.15-0.40 | 0.25-0.50 | 0.025 | 0.025 | 1.00-1.40 | 0.15-0.30 | 3.90-4.30 |
4: BS EN39 steel mechanical properties
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.
5: BS EN39 steel overviews
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm |
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| Width 20mm-1000mm |
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| 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 | EN39 is used for high duty gears, heavy duty worms, heavy roller bearings, breech mechanisms, small arms components, camshafts, clutch plates, valve rockers. | |
6. Heat Treatment
Hardening / ºC : 800 - 820;
Sub-Critically annealed / ºC : 277;
Normalized and Tempered / ºC : 269
7: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
For hot forged block, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.
For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface.
Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.
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