DIN1.7225 708M40 SAE4137H SCM4H Quenched and Tempered Alloy Steel
Similar Grade: DIN1.7225, SAE 4137H, SCM4H, 708M40
Shape: round, flat, square.
Size Range:
| |
Diameter(mm) |
Thickness (mm) |
Width (mm) |
Length(mm) |
| Round |
50-420 |
- |
- |
2000-5800 |
| Square |
50-420 |
- |
- |
2000-5800 |
| flat |
- |
20-50 |
80-600 |
2000-5800 |
Steel-making Condition: EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery Condition:
Annealed , Quenched + Tempered
Surface Condition:
Black, Grinded, Peeled, Rough turned, Polished
Mechanical Properties:(T=20°C if not differently stated)
Tensile Strength (Mpa): 850-1000
Yield Strength(Mpa): 650 min
Fracture elongation A5 (%): 13 min
Notch impact energy ISO-V [J]: 35 min
Hardness (HB): 248-302
Features:
1. Competitive price
2. Immediate delivery
3. Premium quality
4. Reliable service
| Packing details |
In seaworthy packing, as your requirement. |
| Delivery details |
within 30-50 days |
Chemical Composition:
| Grade |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 1.7225 |
0.34-
0.41 |
0.60-
1.00 |
0.035
max |
0.040
max |
0.15-
0.35 |
0.75-
1.20 |
0.15-
0.25 |
Heat Treatment:
Forging: Preheat 1.7225 carefully, then raise temperature to 850-1200ºCfor forging. Do not forge below 850ºC. After forging 1.7225, cool slowly in still air.
Annealing: Heat SAE 4137H slowly to 680-700ºC. Cool in air.
Hardening:SAE 4137H is commonly supplied ready heat treated. If further heat treatment is required annealed 1.7225 should be heated slowly to 860-890ºC and after adequate soaking at this temperature quench in oil. Temper as soon as tools reach room temperature.
Tempering: Heat the component carefully to a suitable temperature selected by reference to a tempering chart or table, soak at the temperature for two hours per 25mm of ruling section, then allow to cool in air. Tempering between 250-375ºC is not advised as tempering within this range will seriously reduce the impact value.
Application:
1.7225 is now widely used in areas such as the motor, oil and gas industries. Suitable for components such as shafts, gears, spindles, bolts, studs and a wide variety of applications where a good quality high tensile steel grade is required.
Product Description:
1.7225 is an H-Steel grade Alloy Steel. It is commonly called 1.7225 Chromium-molybdenum steel. 1.7225 offers good ductility and shock resisting properties combined with resistance to wear. With these characteristics it is a popular high tensile engineering steel with a tensile of 850-1000Mpa. At low temperatures it has reasonably good impact properties. It is also suitable for a variety of elevated temperature applications. For maximum wear and abrasion resistance the steel can be nitrided to give a shallow depth wear resistant case. Flame or induction hardening of 708M40T can give a case hardness of 50HRc or higher.
Contact Information:
FUSHUN SPECIAL STEEL CO., LTD.
Website: fushunmetal.en.made-in-china.com
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