1.7147
Qilu
Product Description
GB 20CrMn 1.7147 Forged Alloy Steel Round Bar
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.
1.7147 steel Stock in warehouse
2: 1.7147 Quality Standard
EN10250-3 2000 ENG Open die forging alloy steel.pdf
3: DIN 1.7147 Steel Equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 3077 | JIS G4105 | DIN (W-Nr.) EN 10250 | AISI/ASTM ASTM A29 | BS 970 |
| Grade | 20CrMn | 20MnCr5 / 1.7147 |
4: 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 |
5: 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, please kindly contact the salesman.
6: 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 | |
7: DIN 1.7147 Steel 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.
8: DIN 1.7147 Steel Heat Treatment
Hot working temperature / ℃: 1150 - 850
Annealing temperature / ℃ ：650 - 700; Hardness after annealing : 217 HBS
Quenching (center) temperature / ℃ ： 850 - 880
Quenching (surface) temperature / ℃ : 810 - 840
Tempering / ℃ : 170 - 210
9: DIN 1.7147 Steel Tolerance
Diameter(mm) | Tolerance | ||
Forged Steel Round Bar | 80-600 | Black Surface:0~+5 | Rough Machined or Turned:0~+3 |
650-1200 | Black Surface:0~+15 | Rough Machined or Turned:0~+3 | |
Hot Rolled Steel Round Bar | 16-310 | Black Surface:0~+1 | Peeled:H11 |
Cold Drawn Steel Round Bar | 6-100 | Black Surface:H11 | Peeled:H11 |
10: Delivery Condition
For hot forged or hot rolled bar, the delivery condition is usually hot forged, annealed/QT, rough turned/Black surface or 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.
