Manufacturer Direct DIN 44Mn28 Spring Steel Round Bar
1: DIN 44Mn28 steel introduction
ASTM1141 is high sulfur medium carbon free-cutting steel, which has better cutting performance. Compared with 45# steel, ASTM1141 can increase tool life by four times, increase productivity by 30%, and has higher strength and hardness.
2:DIN 44Mn28 steel equivalent
| Country | China | Japan | Germany | USA | UK |
| Standard | GB | JIS | DIN (W-Nr.) EN 10277 | AISI/ASTM | BS 970-3-1991 |
| Grade | Y40Mn | SUM43 | 44Mn28 | 1141/1144 |
3: DIN 44Mn28 steel chemical composition
| Grade | C | Mn | P | S |
| 1141/1144 | 0.37-0.45 | 1.35-1.65 | 0.04 | 0.08-0.13 |
| SUM43 | 0.37-0.45 | 1.20-1.55 | 0.05 | 0.20-0.30 |
| Y40Mn | 0.37-0.45 | 1.20-1.55 | 0.04 | 0.20-0.30 |
4: DIN 44Mn28 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: DIN 44Mn28 steel overviews
| 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 | ASTM 1141 is suitable for machining parts requiring high rigidity, such as lead screw, polished rod, rack and spline shaft, etc. | |
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
We are professional manufacturer for many years. we can provide a wide range of steel products.
Usually bundling for large diameter,small diameter bars in bulk or as customer's demand.
The hardness after heat treatment is higher than D2/1.2379/Cr12Mo1V1, and can reach 61-63HRC after high-temperature tempering (525 ± 5 ℃); In terms of strength and wear resistance, it exceeds Cr12Mo1V1, and its toughness is higher than D2/1.2379/Cr12Mo1V1; The manufactured molds rarely have cracks and fissures, greatly improving their service life; The residual stress after wire cutting processing is smaller than that of Cr12Mo1V1; The cutting and grinding performance exceeds Cr12Mo1V1.
Suitable for manufacturing precision punching dies and stamping dies for cold forging, deep drawing, and wire rolling for wire cutting processing.
