1: DIN 1.7147 steel introduction
1.7147 is a European standard carburized steel (surface hardening steel) with high strength toughness and good hardenability. Small quenching deformation, low temperature toughness and good machinability, but low welding performance. It is generally used after carburizing, quenching or quenching and tempering.
2: DIN 1.7147 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 |
20CrMn |
|
20MnCr5 / 1.7147 |
|
|
3: DIN 1.7147 steel chemical composition
| Grade |
C |
Si |
Mn |
P |
S |
Cr |
| 20MnCr5 / 1.7147 |
0.17-0.22 |
0.40 |
0.10-0.40 |
0.035 |
0.035 |
1.00-1.30 |
| 20CrMn |
0.17-0.23 |
0.17-0.37 |
0.90-1.20 |
/ |
/ |
0.90-1.20 |
4: DIN 1.7147 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 1.7147 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 |
1.7147 steel is used in the manufacture and reassembly of large section tempered parts and small section carburized parts. It can also be used to manufacture medium load, low impact small and medium parts, such as gears, shafts, main shafts, friction wheels and gears of variable speed equipment, sleeve of governor, etc. |
6. Heat Treatment
Hot working temperature / ºC : 1150 - 850
Annealing temperature / ºC : 650 - 700; Hardness after annealing : 217 HBS
Quenching (center) temperature / ºC : 850 - 880
Quenching (surface) temperature / ºC : 810 - 840
Tempering / ºC : 170 - 210
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
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