ST35
ST35 Carbon Steel Pipes & Tubes — Supplier & Stockist in India | Russian Metals
Overview of 2618 Aluminium Alloy
Russian Metals supplies high-quality DIN 2391 ST35 seamless precision steel pipes and tubes, backed by full Mill Test Certificates (MTC) for guaranteed chemical and mechanical property compliance. ST35 is known for its high mechanical strength, excellent dimensional accuracy, and reliable toughness. Its seamless structure offers superior pressure resistance, making it ideal for systems where safety and precision are critical. With inherent resistance to corrosion, vibration, and mechanical stress
ST35 Chemical Composition
| Element | Max (%) | Min (%) |
|---|---|---|
| Carbon (C) | ≤0.17 | – |
| Silicon (Si) | ≤0.35 | – |
| Manganese (Mn) | – | ≥0.40 |
| Phosphorus (P) | ≤0.025 | – |
| Sulfur (S) | ≤0.025 | – |
| Iron (Fe) | Balance | Balance |
What is ST35 Steel?
ST35 is a low-carbon, non-alloy precision steel as per the DIN 2391 standard. It offers excellent ductility, machinability, and moderate corrosion resistance, making it suitable for hydraulic cylinders, mechanical structures, and fluid transportation systems.
Primary Keyword: ST35 (used across titles & content)
Secondary Keyword: ST35 steel mechanical properties naturally included below.
ST35 Steel Mechanical Properties
| Delivery Condition | Tensile Strength (Rm) | Yield Strength (ReH) | Elongation (A%) |
|---|---|---|---|
| BK (Cold Finished/Hard) | 480 MPa | — | 6% |
| BKW (Cold Finished/Soft) | 420 MPa | — | 10% |
| BKS (Stress Relieved) | 420 MPa | 315 MPa | 14% |
| GBK (Annealed) | 315–470 MPa | 235 MPa | 25% |
| NBK (Normalized) | 340–470 MPa | 235 MPa | 25% |
Density
~7.85 g/cm³
Hardness
~120–160 HB
Weldability
Excellent; no preheat required.
Applications of ST35 Pipes & Tubes
- Hydraulic & Pneumatic Systems — Cylinders, actuators, and hydraulic pipes.
- Automotive & Mechanical Engineering — Precision components, shafts, and steering columns.
- Industrial Fluid Transport — Water, gas, and chemical pipelines.
- Boilers & Pressure Vessels — Medium-pressure steam lines and heat exchangers.
- Marine & Offshore — Piping systems with moderate corrosion resistance needs.
Available Forms at Russian Metals
- Seamless Pipes & Tubes — Precision cold-drawn and hot-rolled.
- Round Bars & Hollow Bars — For machining and fabrication.
- Custom Cut-Length Tubes — Tailored to project specifications.
- Surface Finishes: Bright, annealed, normalized, polished, or custom-coated.
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | E235 (1.0308) |
| DIN | St37.4 |
| ASTM / AISI | A106 Gr.B (close equivalent) |
| BS | ERW2 / ERW3 |
| ISO | TS-34a |
Why Choose Russian Metals for ST35 Steel
- Certified DIN 2391 ST35 with 3.1/3.2 MTCs
- Large Inventory & Custom Sizes Available
- Competitive Pricing & Fast Pan-India Delivery
- Precision Cutting & CNC Machining on Request
- Trusted by Aerospace, Marine & Industrial Sectors