Seamless Stainless Steel Pipe/Tube
Element Standard Range Typical Value Function
Chromium (Cr) 16.0 - 18.0 16.5 - 17.5 Base corrosion resistance, forms oxide film (Cr₂O₃)
Nickel (Ni) 3.5 - 5.5 4.0 - 4.5 Partially replaces Mn, stabilizes austenitic structure
**Manganese (Mn)**5.5 - 7.5 6.0 - 7.0 Replaces Ni to reduce cost, enhances work-hardening ability
Nitrogen (N) 0.15 - 0.25 0.18 - 0.22 Partially replaces Ni, improves strength and corrosion resistance
Carbon (C) ≤0.15 0.08 - 0.12 Increases hardness; excess reduces corrosion resistance
Silicon (Si) ≤1.0 ≤0.75 Antioxidant, improves high-temperature performance
Phosphorus (P)≤0.06 ≤0.04 Impurity element, strictly controlled
Sulfur (S) ≤0.03 ≤0.02 Impurity element, affects hot workability
Note:
201 Stainless Steel is a nickel-saving austenitic stainless steel, where high manganese (Mn) and nitrogen (N) partially replace nickel (Ni), significantly reducing cost. However, its corrosion resistance is weaker than 304/316 grades.
In Chinese standards (e.g., GB/T 3280), 12Cr17Mn6Ni5N corresponds to 201 stainless steel. Note differences in designations between Indian, American, and other international standards.
Property Annealed State (Solution Treated) Cold Worked State (Hard) Test Standard
Tensile Strength 515 - 760 700 - 1000 ASTM A370
(MPa)
Yield Strength ≥275 550 - 850 ASTM A370
(MPa)
Elongation (%) ≥40 10 - 20 ASTM A370
Hardness ≤200 HB ≤300 HB ASTM E10/E18
Note:
Annealed State: Suitable for welding and forming, but deep-drawing performance is inferior to 304 stainless steel.
Cold Worked State: Strength increases via cold drawing/rolling, but ductility decreases significantly, with higher cracking risk.
Corrosion Resistance:
Resists atmospheric corrosion and weak acid environments, but poor resistance to chloride ions (prone to rusting). Not recommended for marine or chemical media. Welding may induce intergranular corrosion; application scenarios must be carefully selected.
Steel is an alloy of iron and carbon. Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements. Stainless steel’s corrosion resistance and
mechanical properties can be further enhanced by adding other elements, such as nickel, molybdenum, titanium, niobium, manganese, etc.
BAOSTEEL Co., Ltd is a comprehensive company, who is founded in 2008. Specialized in Carbon steel, alloy steel, galvanized steel in pipe and tube,plate and coil,profiles.
We are located in Tianjin Province, the Steel base of China, It is well-known all over the world. We are close to Tianjin Seaport, that is much convenient in carriage.
We welcome all users, manufacturers and traders to cooperate with us
Since our establishment, we have always adhered to the business policy of "Quality for Survival, Product for Development, Credibility for Cooperation and Service for Customer". Under the guidance of this business policy, our company acts as a perennial distributor of steel pipe, steel plate, steel coil, steel rod, steel profiles of Angang Steel, HBIS, JISCO,SGHB ,and etc.
Modern large-scale outdoor storage and indoor storage have been set up in our company, and 20,000 tons of available goods have been prepared.
Pre-sale Service
1.We provide samples free of charge, but the freight should be paid by the buyer.
2. We have full stock,and can deliver within short time.Many styles for your choices.
3. OEM and ODM order are accepted, Any kind of logo printing or design are available.
4. Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you.
5. All of our products are produce by our professional workman and we have our high-work-effect
foreign trade team, you can totally believe our service.
After you choose
1. We will count cheapest shipping cost and make invoice to you at once.
2. Check quality again, then send out to you at 1-2 working day after your payment,
3. Email you the tracking no, and help to chase the parcels until it arrive you.
After-sale choose
1. We are very glad that customer give us some suggestion for price and products.
2. If any question,please contact with us freely by E-mail or Telephone.
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7.Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties’ inspections are all available such SGS, BV ect.
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