302 Stainless Steel Seamless Pipes
302 stainless steel seamless pipe is an austenitic stainless steel pipe, corresponding to the international grades AISI 302 (USA), SUS302 (Japan), and the Chinese grade is 1Cr18Ni9.
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Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of 302 stainless steel seamless pipes in China. With abundant experience, we warmly welcome you to wholesale customized 302 stainless steel seamless pipes from our factory. For price consultation, contact us.
What is 302 Stainless Steel Seamless Pipe?
302 stainless steel seamless pipe is austenitic stainless steel, mainly composed of chromium (17-19%) and nickel (8-10%). Its uniqueness lies in the high carbon content (≤0.15%). After cold working, the strength can be greatly improved, and the maximum tensile strength can reach 1130 MPa, while maintaining good toughness and corrosion resistance.
302 stainless steel cold-rolled pipe is widely used in scenes with dual requirements for strength and corrosion resistance, such as springs, building structures and chemical pipelines.
302 Stainless Steel Pipe
Specifications of 302 stainless steel cold-rolled tubes:
Outer diameter ranges from 6 to 600 mm, wall thickness ranges from 0.5 to 50 mm, and length can be customized according to requirements (usually 6 meters or 12 meters).
Customized services are available for special specifications, such as large-diameter thin-walled tubes.
High Pressure 302 Stainless Steel Pipe Chemical Composition
| Element | Content |
|---|---|
| Cr | 17.0-19.0% |
| Ni | 8.0-10.0% |
| C | ≤0.15% |
Hot Rolled Steel ASTM Ss 302 pipe Mechanical Properties
| Property | Annealed Condition | Cold-Worked (TY) |
|---|---|---|
| Tensile Strength | ≥520 MPa | 980-1130 MPa |
| Elongation | ≥40% | 5-10% |
| Hardness (HB) | ≤187 | ≥250 |
What is the difference between 302, 304 and 302B stainless steel pipe?
| Comparison Items | 302 Stainless Steel pipe | 304 Stainless Steel pipe | 302B Stainless Steel pipe |
|---|---|---|---|
| Carbon Content | 0.15% | ≤0.08% | ≤0.15% (with 2.0-3.0% silicon) |
| Strength | Higher after cold working | Moderate | Higher hardness (due to silicon) |
| Corrosion Resistance | Similar to 304 but slightly higher risk of intergranular corrosion | Excellent (chloride resistance) | Similar to 302 |
| Typical Applications | Springs, architectural decorations | Food equipment, medical devices | High-temperature components (improved heat resistance from |
High Quality 302 Stainless Steel Seamless Pipe Suppliers
FAQ
1. What is the price range of 302 stainless steel seamless pipes?
Key influencing factors: material grade (such as 302B heat-resistant type containing silicon), size (large diameter/thick wall is more expensive), surface treatment (polished pipe price increases by 15–30%).
2. How to maintain 302 stainless steel seamless pipes?
Cleaning: Wipe the surface with a neutral detergent to avoid acidic or alkaline residues.
Protection: In high humidity or corrosive environments, anti-rust oil can be applied or cathodic protection can be used.
Regular inspection: Pay special attention to whether there are cracks or signs of corrosion on welds and elbows.
3. What are the common application scenarios of 302 stainless steel seamless pipes?
Industrial equipment: petrochemical pipelines, heat exchangers, pressure vessels.
Machinery manufacturing: high-strength springs, bearing components.
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