- 1.2357, DIN 50CrMoV13-1, AISI S7 round bar
- 1.2357, DIN 50CrMoV13-1, AISI S7 forging
- 1.2357, DIN 50CrMoV13-1, AISI S7 sheet
- 1.2357, DIN 50CrMoV13-1, AISI S7 flat bar
- 1.2357, DIN 50CrMoV13-1, AISI S7 pipe
1.2357, DIN 50CrMoV13-1, AISI S7
Production specification
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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1.2357, DIN 50CrMoV13-1, AISI S7
Designation by Standards
Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
OH253 | 253 | 1.2357 | 50CrMoV13-1 | - | S7 |
Chemical Composition (in weight %)
C | Si | Mn | Cr | Mo | Ni | V | W | Others |
0.50 | 0.50 | 0.70 | 3.25 | 1.50 | - | 0.25 | - | - |
Description
S7 is a general purpose air hardening steel/" target="_blank" class="keylink">tool steel having high impact and shock resistance. It has good resistance to softening at moderately high temperatures. This combination of properties makes it suitable for many hot-work and cold-work applications.
Applications
Chisels, rivet sets, punches, driver bolts. Hot punching and shearing.
Physical properties (avarage values) at ambient temperature
Density [g/cm3]: 7.86
Coefficient of Linear Thermal Expansion 10-6 oC-1
20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC | 20-600oC | 20-700oC |
11.7 | 12.9 | 13.3 | 13.8 | 14.1 | 14.3 | 14.6 |
Continuous Cooling Transformation (CCT) Diagram
Time-Temperature Transformation (TTT) Diagram
Click the image to enlarge the diagram.
Soft Annealing
Heat to 810-850oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.
Stress Relieving
To relieve machining stresses for greater accuracy in hardening - first rough machine, then anneal below the critical at 649/677oC a minimum of one hour at temperature and cool slowly, then finish machine.
Hardening
Harden from a temperature of 930-960oC followed by air or oil quenching. Hardness after quenching is 59-61 HRC.
Tempering
Tempering temperature: 150-400oC.
Tempering Temperature (oC) vs. Hardness (HRC)
100oC | 200oC | 250oC | 300oC | 400oC | 500oC | 550oC | 600oC | 650oC |
59 | 57 | 55 | 54 | 53 | 52 | 52 | 48 | 41 |
Tempering Diagram
Forging
Hot forming temperature: 1066-1121oC.
Machinability
The machinability of S7 alloy may be rated at about 75/80 % of a 1 % carbon steel/" target="_blank" class="keylink">tool steel.
Corrosion Resistance
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.
Mechanical properties
Heat treatment
Machining
Welding performance
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