AISI4140 / 42CrMo / 42CrMo4 Alloy Steel Plate Tool Steel & Alloy Steel Ignots
AISI4140 / 42CrMo / 42CrMo4 Alloy Steel Plate Tool Steel & Alloy Steel Ignots
Products Specification of Steel Plate
| Products Name | 42CrMo4 Alloy Steel Plate |
| Thickness | 10.0 - 200.0mm |
| Width | 100 - 2200mm custom cutting any size as request |
| Length | 6m 8m 10m 11.5m 12m or cutting any length as request |
| Standard | ASTM JIS GB EN |
| MOQ | 500 Kgs |
| Deliver time | 7 - 14 days |
| Loading Port | Shanghai Port |
| Packing | wooden pallets |
| Other Grade | AR400 / AR450 / AR500 / AR600 NM400 NM450 NM500 NM600 |
| Service | Cutting, Heat treatment |
DIN 42CRMO4 / 1.7225 STEEL
42CrMo4 is a heat treatable steel which contains at least 0.9%Cr,0.15%Mo as strengthening elements.After quenched and tempered, It obtains high strength, good low-temperature impact toughness with a typical tensile strength of 900 -1200 N/mm2.42CrMo4 steel has better performance than 34CrMo4 steel due to the higher carbon and chromium content.Similar to AISI 4140,only a little difference in Mn,Cr content.This material also has good machinability,good wear-resistance,but the temper brittleness is not obvious,and poor in weldability.
42CRMO4 SUPPLY FORM & SIZE & TOLERANCE
| Form of Supply | Size(mm) | Length(mm) |
| Round bar | Φ6-Φ1,000 | 3,000-10,000 |
| Square bar | 100×100-600×600 | 3,000-6,000 |
| Plate/Sheet | Thickness :20-400 Width:80-1,000 |
2,000-6,000 |
| Flat bar/Blcoks | Thickness :120-800 Width:120-1,500 |
2,000-6,000 |
42CRMO4 SURFACE FINISH&TOLERANCE
| Surface Finish | Black-Forged | Black-Rolled | Turned | Grinding | Polished | Peeled | Cold Drawn |
| Tolerance | (0,+5mm) | (0,+1mm) | (0,+3mm) | Best h9 | Best h11 | Best H11 | Best H11 |
42CRMO4 CHEMICAL COMPOSITION PER EN 10083-3
| GRADE | NUMBER | C | Si | Mn | P | S | Cr | Mo |
| 42CrMo4 | 1.7225 | 0.38-0.45 | ≤ 0.40 | 0.60-0.90 | ≤ 0.025 | ≤ 0.035 | 0.90-1.20 | 0.15-0.30 |
42CRMO4 RELEVANT STANDARDS
| USA | UK | China | Japan | France | Russia |
| 4140 | EN19/708M40 | 42CrMo | SCM440 | 42CD4 | 42HM |
42CRMO4 MECHANICAL PROPERTY
| Diameter d mm | ≤ 16 | 16-40 | 40-100 | 100-160 | 160-250 |
| Thickness t mm | < 8 | 8-20 | 20-60 | 60-100 | 100-160 |
| Yield Strength Mpa | ≥900 | ≥750 | ≥650 | ≥550 | ≥500 |
| Tensile Strength Mpa | 1100-1300 | 1000-1200 | 900-1100 | 800-950 | 750-900 |
| Elongation, % | ≥10 | ≥11 | ≥12 | ≥13 | ≥14 |
| Reduction of area ,% | ≥40 | ≥45 | ≥50 | ≥50 | ≥55 |
| impact | ≥30 | ≥35 | ≥35 | ≥35 | ≥35 |
42CRMO4 FORGING
42CrMo4 forging temperature:900 – 1100°C ,cooling as slowly as possible in still air or in sand after forged.
42CRMO4 HEAT TREATMENT
- Normalizing: 850 – 880°C,Cooling in air
- Soft Annealing:680 – 720°C,Cooling in furnace
- Stress relieve:450-650°C,Cooling in air
- Hardening:820 – 880°C,oil or water quench
- Tempering:540 – 680°C,Cooling in air
42CRMO4 SURFACE HARDNESS
- Treated to improve shearability (+S):Max 255HB
- Soft annealed (+A):Max 241HB
- Pre Quenched and tempered:280-320HB
- Flame or induction hardening:Min 53HRC
| NORMAL HARDENABILITY +H (850°C – hardness HRC – distance mm) | |||||||||||||||
| Distance mm | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| HRC Min | 53 | 53 | 52 | 51 | 49 | 43 | 40 | 37 | 34 | 32 | 31 | 30 | 30 | 29 | 29 |
| HRC Max | 61 | 61 | 61 | 60 | 60 | 59 | 59 | 58 | 56 | 53 | 51 | 48 | 47 | 46 | 45 |
42CRMO4 APPLICATION
42CrMo4 has high strength and wear-resistance,widely used in many industries.
Components with high strength and toughness for tools, automotive parts,mechanical engineering, armament components,such as geer wheels,pinions,connecting rods,parts for mechanical engineering.
Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts,gears
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