41CrAlMo7 / 905M39
Qilu
Product Description
GB 38CrMoAl 41CrAlMo7(ISO) 905M39 SACM645 Hot Rolled Round Steel
1: JIS SACM645 Steel Introduction
SACM645 is a nitrided steel, which is a Japanese grade alloy steel and the executive standard is: JIS G4053-2008. SACM645 alloy structural steel has high surface hardness, wear resistance and fatigue strength, good heat resistance and corrosion, and low hardenability.
SACM645 steel Stock in warehouse
2: 41CrAlMo7 Quality Standard
EN10250-3 2000 ENG Open die forging alloy steel.pdf
3: JIS SACM645 Steel Equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 3077 | JIS G4105 | DIN (W-Nr.) EN 10250 | ASTM/SAE/AISI ASTM A29 | BS 970 |
| Grade | 38CrMoAl | SACM645 | 34CrAlMo5 / 41CrAlMo7 | / | 905M3 / 905M39 |
4: JIS SACM645 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| SACM645 | 0.35-0.42 | 0.20-0.45 | 0.30-0.60 | 0.035 | 0.035 | 1.35-1.65 | 0.15-0.25 | 0.03 |
| 34CrAlMo5 / 41CrAlMo7 | 0.38-0.45 | 0.40 | 0.40-0.70 | 0.025 | 0.035 | 1.50-1.80 | 0.20-0.35 | / |
5: JIS SACM645 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: JIS SACM645 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: JIS SACM645 Steel Application
It is used to make nitrided parts with high wear resistance, high fatigue strength and considerable strength and high dimensional accuracy after treatment. Such as imitation die, cylinder liner, gear, high pressure valve, boring rod, worm, grinding machine spindle, etc.
8: JIS SACM645 Steel Heat Treatment
Quench 940℃, water cooled, oil cooled.
Tempering 640℃, water cooling, oil cooling.
9: JIS SACM645 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 | Rough Machined or Turned: H11 | |||
| Cold Drawn Steel Round Bar | 6-100 | Black Surface: H11 | Rough Machined or Turned: H11 | |||
10: JIS SACM645 Steel Delivery Condion
For hot forged or hot rolled or cold drawn bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface or hot rolled, annealed/QT, Black surface or cold drawn, annealed/QT, peeled/black surface.
For hot forged block or hot rolled plate, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface or hot rolled, annealed/QT, black surface.
