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.
Tel: 89-0731-89903933(CHANGSHA, Office)
Fax: +86-0731-89853933
Mobile: +86-15675829432
Website: www.fushunspecialsteel.com
To expand the international market and get the advantages of markets in Hong Kong, We, FUSHUN SPECIAL STEEL Co., Ltd, were established by Huangshi Chengquan Group in 2014.
Huangshi Chengquan Group consists of the following parts:
Ezhou Liufan Chengquan Forging & Casting Factory, established in 1995, covers an area of 10000 square meters. The production capacity is more than 10000 tons per year.
Foshan Shiyong Tool Steel Sales Co., Ltd. Founded in 1998, covers an area of 3000 square meters, annual inventory of 15000 tons.
Provide with the following services: Saw Cutting, Mold, Machining.
Based on its manufacturing capacity, We, Fushun Special Steel Co., Ltd., are engaged in the import and export of iron alloy steel and other special steel.
Export:
Our own products:
Tool Steel: (carbon tool steel, alloy tool steel, high-speed tool steel),
Die steel: (cold work die steel, hot work die steel, plastic die steel)
And sale: Structural steel(carbon structural steel, alloy structural steel)
Shape: Round, square, flat, heavy thickness plate, heavy wall thickness steel tube.
Stainless steel, Bearing steel, Spring steel, Cold Heading Steel, Forgings
Imports: Ferroalloy (chromium iron, nickel iron, vanadium iron, molybdenum iron, etc. )
To provide high quality services for global customers, We insist in the follow principles:
Best price: Try our best to give the lowest price
Top quality: Fake a penalty ten
Fast delivery: Timely delivery
One stop shop: With 20 year business experience, we know steel sources in China, and we can provide a one stop shop service.
After service: Responsive, quality objection don't shuffle.
