Core Product Advantage - A Benchmark for Precision Machining in Medium Carbon Steel
The AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube (Standards: ASTM A108 / GB/T 3639) features a carbon content of 0.42%–0.50%, achieving an optimal balance between strength and toughness. Cold drawing enables H8-grade dimensional precision (±0.03 mm) and a surface roughness of Ra ≤ 1.6 μm. Its seamless structure ensures excellent sealing and fatigue resistance under high-pressure conditions, making it ideal for applications across various industries with stringent requirements for mechanical performance and machining accuracy.
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube Use in Automotive, Aerospace, and Shipbuilding Industries:
✅ Excellent Mechanical Properties:
After quenching and tempering treatment (840°C quenching + 600°C tempering):
Tensile strength ≥ 685 MPa, yield strength ≥ 550 MPa, elongation ≥ 16%, impact energy absorption ≥ 35 J (at 20°C)
Fatigue limit ≥ 300 MPa (10⁷ cycles), suitable for critical components such as suspension control arms, steering shafts, and engine mounts
✅ Quality Control System:
From continuous casting billets (electric arc furnace + LF refining) to cold drawing, the product undergoes 12 quality inspection procedures:
Ultrasonic testing (detection sensitivity: Φ2 mm flat-bottom hole)
Grain size inspection (Grade ≥ 6, per GB/T 6394)
Full dimensional inspection using a coordinate measuring machine (CMM) with ±0.005 mm accuracy
PPAP documentation, PFMEA analysis reports, and batch traceability codes are provided to meet IATF 16949 traceability requirements.
✅ Comprehensive Certifications:
Certified under the IATF 16949 automotive quality management system and the CE-PED 2014/68/EU Pressure Equipment Directive. Supplied with original mill test reports (CMTR), mechanical property test reports, and non-destructive testing (UT/MT) reports to ensure compliance with regulations in North America, the EU, and Southeast Asia.
✅ Flexible Supply Chain:
Regular stock specifications include across-flat sizes from 6 mm to 100 mm, wall thicknesses from 1.5 mm to 20 mm, and lengths from 3 m to 12 m. Samples are available within 72 hours. Standard bulk order lead time is 25 days, with expedited production available in as little as 5 days for urgent orders.
✅ Market Enablement Toolkit:
Includes multilingual product manuals (English, Spanish, Portuguese, Arabic), machining process flowcharts, and competitor comparison sheets (performance comparison with 4140/SAE 1045 hot-rolled tubes) to help distributors efficiently reach end customers.
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube Use in Hardware Tool Manufacturing
✅ Outstanding Machinability:
Post cold drawing hardness HB ≤ 197, machinability index ≥ 60% (with free-cutting steel 1215 as 100%). Recommended use of YG8 carbide tools with a feed rate of 15–30 m/min. Machining efficiency is increased by 30% compared to hot-rolled tubes.
Capable of withstanding 30% cold deformation, supporting forming processes such as bending, flaring, and reducing, with a finished product yield rate of ≥ 97%.
✅ Surface Treatment Compatibility:
The seamless surface is suitable for galvanizing (Zn ≥ 8 μm), chrome plating (Cr ≥ 0.3 μm), painting, and other treatments. In neutral salt spray tests (ASTM B117), corrosion resistance exceeds 500 hours, meeting the aesthetic and protective requirements of hardware products.
Machining Data Comparison:
| Machining Type | Precision of Cold Drawn Tubes | Precision of Hot Rolled Tubes | Processing Time Comparison |
|---|---|---|---|
| Outer Diameter Turning | IT7–IT8 | IT10–IT11 | 40% increase in efficiency |
| Drilling | Hole tolerance ±0.05 mm | Hole tolerance ±0.2 mm | 60% reduction in defect rate |
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube Use in Chemical Plants
✅ Pressure-Bearing Performance:
Hydraulic test pressure is calculated using the formula: P = 2ST / D
(S = allowable stress 110 MPa, T = wall thickness, D = outer diameter)
For the DN50 specification (outer diameter 60.3 mm, wall thickness 3.8 mm), the test pressure can reach 16 MPa, meeting the pressure-bearing requirements of most industrial pipelines.
✅ Corrosion Protection Solutions:
| Corrosive Environment | Recommended Surface Treatment | Protective Performance | Typical Application Scenario |
|---|---|---|---|
| Neutral water medium | Epoxy resin coating | Service life ≥ 8 years | Circulating water pipelines |
| Mild acidic/alkaline | Hot-dip galvanizing + sealant | Salt spray test ≥ 1000 h | Chemical waste fluid pipelines |
| Humid atmospheric | Dacromet coating | No red rust ≥ 500 h | Outdoor equipment supports |
Safety Certification:
Certified to API 5L Grade B, suitable for low- to medium-pressure oil and gas pipelines. Third-party burst tests show an average burst pressure 2.3 times higher than the test pressure, significantly exceeding industry safety standards.
Summary of Adjustments:
Added "the" before "seamless structure" and "DN50 specification" for natural phrasing.
Formatted table for better visual alignment and consistency.
Slightly refined sentence rhythm (e.g., "the test pressure can reach 16 MPa..." instead of "can reach 16 MPa").
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube Use in furniture factory
✅ Aesthetic and Finishing Advantages:
After cold drawing, the surface roughness reaches Ra ≤ 1.6 μm; with grinding and polishing, a mirror finish of Ra ≤ 0.4 μm can be achieved. Combined with nickel-chrome electroplating (thickness ≥ 10 μm), the product is ideal for premium furniture hardware such as table legs, chair frames, and cabinet handles.
The hexagonal cross-section offers a distinctive visual identity and provides up to 20% higher load-bearing capacity than round tubes of the same cross-sectional area (in terms of bending strength).
✅ Environmental Compliance:
Compliant with RoHS 2.0 (≤ 0.1% for six hazardous substances, including lead, cadmium, and mercury) and REACH SVHC (233 substances). Coating processes support the EU EcoVadis Silver environmental standard, meeting the requirements for high-end furniture exports.