42CrMo4 / 1.7225 Alloy Steel Bar
42CrMo4 alloy steel bar (EN 1.7225) is a chromium-molybdenum low-alloy steel bar with excellent strength, toughness, and wear resistance. It is widely supplied in quenched and tempered (Q&T) condition and is equivalent to AISI 4140 round bar in the American standard. Thanks to its superior mechanical properties, 42CrMo4 steel bars are ideal for heavy-duty engineering applications.
| 1.7725 steel round bar Specification: |
| Grade | 42CrMo4 / 1.7225 |
|---|---|
| Specification | EN 10083-3, ASTM A29, ASTM A322 |
| Round bar size | Diameter: 3mm~800mm |
| Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Square bar size | 4mm*4mm~100mm*100mm |
| Flat bar size | Thickness: 2mm~100mm |
| Width: 10mm~500mm | |
| Bar size | 2mm~100mm |
| Finish | Bright, Polish, Rough Turned, Grinding, Centreless Ground & Black |
| Surface | Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline |
| Condition | Cold Drawnd Pulished Cold Drawn Centreless Ground & Polished, Annealed round bar |
| Technique | Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod |
| Form | Round, Rod, Precision Ground Bar, Square, Round Rod, Hollow, Hex (A/F), Triangle, Rectangle, Threaded, T-Bar, Half Round Bar, Flat Bar, Rings, Blocks, Billet, Ingot, I/H Bar, Angle, Channel Bar, Profiles, Forging Etc. |
| 42CrMo4 alloy steel rod Chemical Composition: |
| Grade | C | Mn | Si | S | P | Cr | Mo |
| 42CrMo4 | 0.38-0.43 | 0.75-1.0 | 0.15-0.30 | 0.04 | 0.035 | 0.8-1.1 | 0.15-0.25 |
| DIN 42CrMo4 steel bar Round Rod Mechanical Properties: |
| Properties | Metric | Imperial |
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25.70% | 25.70% |
| Hardness, Brinell | 197 | 197 |
| Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
| Hardness, Rockwell B (converted from Brinell hardness) | 92 | 92 |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 207 | 207 |
| Machinability (based on AISI 1212 as 100 machinability) | 65 | 65 |
| Applications of 42CrMo4 bar |
42CrMo4 / 1.7225 alloy steel bars are widely used in:
-
Automotive parts: gears, axles, crankshafts, connecting rods
-
Oil & Gas equipment: drill collars, tool joints, downhole tools
-
Engineering machinery: shafts, spindles, couplings, hydraulic parts
-
Power industry: turbine shafts, generator parts, heavy-duty fasteners
-
Tooling: dies, impact tools, fixtures
| FAQ |
Q1: Is 42CrMo4 steel bar the same as AISI 4140 round bar?
Yes, 42CrMo4 (EN 1.7225) is the European equivalent of AISI 4140 in the American standard.
Q2: Can 42CrMo4 alloy steel bars be welded?
Yes, but preheating and post-weld heat treatment are recommended to reduce cracking risk.
Q3: What delivery condition is available?
Usually supplied in quenched & tempered condition (Q&T), also available as hot rolled, forged, or normalized.
| SASA ALLOY'S Quality Assurance |
1. Visual Dimension Test 2. Mechanical examining like tensile, Elongation and reduction of area. 3. Impact analysis 4. Chemical examination analysis 5. Hardness test 6. Pitting protection test 7. Penetrant Test 8. Intergranular Corrosion Testing 9. Roughness Testing 10. Metallography Experimental Test
| Why Choose Us |
1. You can get the perfect material according to your requirement at the least possible price. 2. We also offer Reworks, FOB, CFR, CIF, and door to door delivery prices. We suggest you to do deal for shipping which will be quite economical. 3. The materials we provide are completely verifiable, right from raw material test certificate to the final dimensional statement.(Reports will show on requirement) 4. We guarantee to give a response within 24hours(usually in the same hour) 5. Provide SGS TUV report. 6. We are fully dedicated to our customers. If it will not possible to meet your requirements after examining all options, we will not mislead you by making false promises which will create good customer relations. 7.Provide one-stop service.
| Alloy bar Package: |
1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. 2. Sasa alloy’s pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
