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Steel products
AISI 4140 Steel Bar 1.7225 42CrMo4 SCM440
Request AISI 4140 Steel Bar 1.7225 42CrMo4 SCM440 by standard, size and finish, with inspection and mill test certificates from SAKY METAL.
Technical procurement data
Standards, supply and inspection
AISI 4140 Steel Bar 1.7225 42CrMo4 SCM440 is supplied as a bar within the steel products family. A reliable enquiry identifies the exact designation, governing standard, dimensions, condition, inspection scope and documentation before quotation.
| Material / grade | AISI 4140 Steel Bar 1.7225 42CrMo4 SCM440; the exact grade or temper must be confirmed on the purchase order because the legacy source contained a conflicting designation. |
|---|---|
| Product form | Bar |
| Standards and order reference | ASTM A29 DIN 17200 |
| Dimensions and tolerances | State the required section or diameter, wall or thickness, length, tolerance, straightness or flatness, edge/end condition and machining allowance. |
| Surface and supply condition | Black, Rough Machined, Turned |
| Inspection options | The inspection plan may include material identification, chemistry and mechanical-property review, dimensional and visual inspection, plus ultrasonic testing when section size and service criticality require it. |
| MTC and traceability | Specify EN 10204 3.1 MTC or the required certificate type, heat/lot traceability, inspection reports, marking, packing list and any third-party release before order confirmation. |
| Typical applications | General purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. |
| RFQ checklist | Send the bar grade and standard, required dimensions and tolerance, quantity, surface/condition, inspection and certificate requirements, packing preference and delivery destination. |
Final compliance is defined by the purchase order, approved drawing and issued mill documentation. Availability is confirmed for each grade, size and production route.
AISI 4340 Steel Bar 36CrNiMo4 1.6511 EN24 817M40 SNCM439
- Material: 1.7225 42CrMo4 SCM440
- Dia.: 8mm – 300mm
- Standard : ASTM A29 DIN 17200
- Surface : Black, Rough Machined, Turned
SAKY METAL AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.
Specifications
Relevant Standards
Chemical Composition
Mechanical Properties
Thermal Properties
Specifications
| Material | 1.7225 42CrMo4 SCM440,etc |
| Specification | ASTM A29 DIN 17200 GB/T 3077 BS 970 |
| Surface | Black, Rough Machined, Turned |
| Diameter Range | 1.0 ～ 300.0mm |
| Processing | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
Relevant Standards
| Country | USA | German | British | Japan | China | Australia |
| Standard | ASTM A29 | DIN 17200 | BS 970 | JIS G4105 | GB/T 3077 | AS 1444 |
| Grades | 4140 | 1.7225/ 42crmo4 | 42CrMo4 | SCM440 | 42CrMo | 4140 |
Chemical Composition
| Standard | Grade | C | Mn | P | S | Si | Ni | Cr | Mo |
| ASTM A29 | 4140 | 0.38-0.43 | 0.75-1.00 | 0.035 | 0.040 | 0.15-0.35 | – | 0.8-1.10 | 0.15-0.25 |
| EN 10250 | 42CrMo4/ 1.7225 | 0.38-0.45 | 0.6-0.9 | 0.035 | 0.035 | 0.4 | – | 0.9-1.2 | 0.15-0.30 |
| JIS G4105 | SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.03 | 0.15-0.35 | – | 0.9-1.2 | 0.15-0.30 |
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 |
Thermal Properties
| Properties | Metric | Imperial |
| Thermal expansion co-efficient (20°C/68°F, specimen oil hardened, 600°C (1110°F) temper | 12.3 µm/m°C | 6.83 µin/in°F |
| Thermal conductivity (typical steel) | 44.5 W/mK | 309 BTU in/hr.ft².°F |
Features & Benefits
- High Strength: After heat treatment, the 4140 steel bar exhibits excellent strength properties.
- Good Toughness: Properly heat-treated, the 4140 steel bar demonstrates good toughness.
- Excellent Wear Resistance: Due to its special alloy composition, the 4140 steel bar has good wear resistance.
- Good Machinability: The 4140 steel bar is easy to machine and shape, allowing for machining processes such as cutting, milling, drilling, and welding.
- Good Heat Treatment Performance: The 4140 steel bar has excellent heat treatment performance.
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Why Choose Us?
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Feedback From Our Clients
Alloy steel rods have several notable advantages, making them favored in various applications.
Packaging
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. SAKY METAL packages every order in numerous ways based on the products. We pack our products in multiple ways, such as,
Our Services
Cutting and Processing Services
Offering customized cutting and processing services to produce metal products that meet specific size and shape requirements.
Heat Treatment
Providing heat-treatment support for applicable metal products when hardness, strength, or other properties need to be adjusted.
Quality Control and Inspection
Implementing strict quality control and inspection processes to ensure that metal products meet relevant standards and customer requirements.
Get a Quote
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