Heat Treated Steel Bar is engineered through specialized heat treatment processes to enhance strength, hardness, and durability. It is widely used in machinery manufacturing, automotive components, industrial equipment, and engineering applications.
Material Type :
Heat Treated Carbon & Alloy Steel (45#, 40Cr, 42CrMo, S45C)Diameter Range :
8mm – 300mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
Heat treated steel bars undergo processes such as quenching, tempering, normalizing, or annealing, which improve the steel's internal structure and optimize its mechanical properties. These treatments enhance hardness, toughness, wear resistance, and overall performance.
These steel bars provide excellent strength, fatigue resistance, and dimensional stability, making them suitable for components that operate under heavy loads, repeated stress, or demanding working conditions. Various carbon steel and alloy steel grades can be heat treated to meet specific application requirements.
Heat treated steel bars are widely used in shafts, gears, fasteners, machinery parts, automotive components, construction equipment, and industrial manufacturing, where enhanced mechanical performance, durability, and long service life are essential.
Heat Treated Steel Bar is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| 45# Carbon Steel | GB 45#
|
Tensile ≥600 MPa
|
Diameter 10–300 mm
|
C 0.42–0.50, Si≤0.37
|
| 40Cr Alloy Steel | GB 40Cr
|
Tensile ≥980 MPa
|
Diameter 10–300 mm
|
C 0.37–0.44, Si≤0.37
|
| 42CrMo High Strength Alloy Steel | GB 42CrMo
|
Tensile ≥1080 MPa
|
Diameter 10–300 mm
|
C 0.38–0.45, Si≤0.37
|
| 20CrMnTi Carburizing Steel | GB 20CrMnTi
|
Tensile ≥1080 MPa
|
Diameter 10–300 mm
|
C 0.17–0.23, Si≤0.37
|
| 38CrMoAl Nitriding Steel | GB 38CrMoAl
|
Tensile ≥980 MPa
|
Diameter 10–300 mm
|
C 0.35–0.42, Si≤0.37
|
| GCr15 Bearing Steel | GB GCr15
|
Tensile ≥610 MPa
|
Diameter 10–300 mm
|
C 0.95–1.05, Si≤0.40
|
| H13 Hot Work Tool Steel | ASTM H13
|
Tensile ≥1600 MPa
|
Diameter 10–250 mm
|
C 0.32–0.45, Si 0.80–1.20
|
| P20 Plastic Mold Steel | ASTM P20
|
Tensile ≥980 MPa
|
Diameter 10–250 mm
|
C 0.28–0.40, Si 0.20–0.80
|
| 17-4PH Precipitation Hardening Stainless Steel | UNS S17400
|
Tensile ≥1310 MPa
|
Diameter 10–250 mm
|
C≤0.07, Cr 15.5–17.5
|
| 304 Stainless Steel | UNS S30400
|
Tensile ≥515 MPa
|
Diameter 10–300 mm
|
C≤0.08, Cr 18.0–20.0
|
| 316 Stainless Steel | UNS S31600
|
Tensile ≥515 MPa
|
Diameter 10–300 mm
|
C≤0.08, Cr 16.0–18.5
|
| Q355B Low Alloy Steel | GB Q355B
|
Tensile ≥470 MPa
|
Diameter 10–400 mm
|
C≤0.24, Si≤0.55
|
|
Note: If you do not find a Heat Treated Steel Bar that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What types and standards of carbon steel do you mainly supply?
A: We mainly supply a wide range of carbon steel products including seamless and welded steel pipes, steel plates, coils, and bars. Common carbon steel grades include A36, A106, A53, API 5L, and S355, which are widely used in construction, machinery, and pipeline engineering. All carbon steel products comply with international standards such as ASTM, API, EN, and JIS. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a Heat Treated Steel Bar that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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