SAE4140 QT Seamless Precision Steel Tube 48×11mm with 28-34 HRC Hardness and 655 MPa Tensile Strength
Price:
Negotiable
MOQ:
2Tons
Delivery Time:
20days
Brand:
Joyruns
Product Description
SAE4140 QT Seamless Precision Steel Tube
High-quality quenched and tempered alloy structural steel tube with dimensions 48×11mm, manufactured to EN10083-3 standards with seamless galvanized construction.
Product Overview
SAE4140+QT EN10083-3 cold drawn precision steel tube is manufactured from 4140 alloy steel, a premium quenched and tempered alloy structural steel classified as high-quality medium carbon alloy steel.
Key Characteristics
- Oil quenched & tempered hardness: 28-34 HRC
- Annealing delivery hardness: less than 250HB
- Chromium-molybdenum alloy composition for superior performance
- Excellent hardness penetration and uniformity of strength
- Suitable for high and low-temperature applications
- Compatible with sour gas environments with appropriate heat treatments
- Enhanced wear resistance in hardened and tempered condition
- Available with precision ground surface finish (25RMS Max)
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 | 42CrMo4/1.7224 | 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 | 140 GPa | 20300 ksi |
| Shear modulus | 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 |
| Machinability | 65 | 65 |
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Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee