- 1.7225, DIN 42CrMo4, AISI 4142 round bar
- 1.7225, DIN 42CrMo4, AISI 4142 forging
- 1.7225, DIN 42CrMo4, AISI 4142 sheet
- 1.7225, DIN 42CrMo4, AISI 4142 flat bar
- 1.7225, DIN 42CrMo4, AISI 4142 pipe
1.7225, DIN 42CrMo4, AISI 4142
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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1.7225, DIN 42CrMo4, AISI 4142
Designation by Standards
Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
VCMO140 | 724 | 1.7225 | 42CrMo4 | 42CrMo4 | 4142 |
Chemical Composition (in weight %)
C | Si | Mn | Cr | Mo | Ni | V | W | Others |
0.41 | 0.20 | 0.75 | 1.05 | 0.23 | - | - | - | - |
Description
This is one of the chromium, molybdenum, manganese low steel/" target="_blank" class="keylink">alloy steels noted for toughness, good torsional strength and good fatigue strength.
Applications
Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 190-210
Density [g/cm3]: 7.84
Continuous Cooling Transformation (CCT) Diagram
Soft Annealing
Heat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.
Hardening
Harden from a temperature of 820-850, 830-860oC followed by water or oil quenching.
Normalizing
Normalizing: 840-880oC
Tempering
Tempering temperature: 540-680oC
Mechanical Properties in Quenched and Tempered Condition
Diameter (mm) | 0.2 % proof stress (N/mm2) | Tensile strength (N/mm2) | Elongation (%) | Reduction of area (%) | Notch impact energy (ISO-V) (J) |
up to 16 | 900 | 1100-1300 | 10 | 40 | 35 |
17-40 | 750 | 1000-1200 | 11 | 45 | 40 |
41-100 | 650 | 900-1100 | 12 | 50 | 40 |
101-160 | 550 | 800-950 | 13 | 50 | 40 |
161-250 | 500 | 750-900 | 14 | 55 | 40 |
Diagram Tempering Temperature - Mechanical Properties
Hardenability in the end-quench test (Hardness (HRC) vs. Distance (mm))
Hardness | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 |
H max. | 61 | 61 | 61 | 60 | 60 | 59 | 59 | 58 | 56 | 53 | 51 | 48 | 47 |
H min. | 53 | 53 | 52 | 51 | 49 | 43 | 40 | 37 | 34 | 32 | 31 | 30 | 30 |
HH max. | 61 | 61 | 61 | 60 | 60 | 59 | 59 | 58 | 56 | 53 | 51 | 48 | 47 |
HH min. | 56 | 56 | 55 | 54 | 52 | 48 | 46 | 44 | 41 | 39 | 38 | 36 | 36 |
HL max. | 58 | 58 | 58 | 57 | 56 | 54 | 53 | 51 | 49 | 46 | 44 | 42 | 41 |
HL min. | 53 | 53 | 52 | 51 | 49 | 43 | 40 | 37 | 34 | 32 | 31 | 30 | 30 |
Forging
Hot forming temperature: 1050-850oC.
Machinability
Machinability of this alloy is good in the annealed condition. In the heat treated and quenched condition machining is best limited to finish grinding.
Corrosion Resistance
This alloy is a steel and is not corrosion resistant. Protective coating must be used in corrosive, or water, environments.
Mechanical properties
Heat treatment
Machining
Welding performance
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