- 1.8519, DIN 31CrMoV9 round bar
- 1.8519, DIN 31CrMoV9 forging
- 1.8519, DIN 31CrMoV9 sheet
- 1.8519, DIN 31CrMoV9 flat bar
- 1.8519, DIN 31CrMoV9 pipe
1.8519, DIN 31CrMoV9
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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1.8519, DIN 31CrMoV9
Designation by Standards
Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
PO735 | 735 | 1.8519 | 31CrMoV9 | - | - |
Chemical Composition (in weight %)
C | Si | Mn | Cr | Mo | Ni | V | W | Others |
0.30 | max. 0.40 | 0.55 | 2.50 | 0.20 | - | 0.15 | - | - |
Description
Al-alloyed nitriding steel grade for large-sections.
Applications
Structural parts with high surface hardness - piston rods, extruders, cylinders, shafts, straightening tools, measuring tools, etc.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.73
Coefficient of Linear Thermal Expansion 10-6 oC-1
-191 to +16oC | 20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC |
9.1 | 11.1 | 12.1 | 12.9 | 13.5 | 13.9 |
Continuous Cooling Transformation (CCT) Diagram
Time-Temperature Transformation (TTT) Diagram
Soft Annealing
Heat to 650-720oC, cool slowly. This will produce a maximum Brinell hardness of 248.
Hardening
Harden from a temperature of 870-930oC followed by oil/polymer or water quenching.
Tempering
Tempering temperature: 580-700oC.
Nitriding
Temperature: 480-570oC.
Surface hardness after nitriding: 800 HV
Mechanical Properties in Quenched and Tempered Condition
Diameter (mm) | 0.2 proof stress (N/mm2) | Tensile stregth (N/mm2) | Elongation (%) | Reduction (%) | Notch impact energy (ISO-V) (J) |
16-40 | 900 | 1100-1300 | 9 | - | 25 |
41-100 | 800 | 1000-1200 | 10 | - | 30 |
101-160 | 700 | 900-1100 | 11 | - | 35 |
161-250 | 650 | 850-1050 | 12 | - | 40 |
Mechanical Properties in Quenched and Tempered Condition
Forging
Hot forming temperature: 1050-850oC.
Machinability
No data.
Mechanical properties
Heat treatment
Machining
Welding performance
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