309/309S Stainless Steel Coil Introduction
309/309S Stainless Steel Coil
309 stainless steel is an austenitic stainless steel comprised of higher chromium and nickel content. 309 stainless steel coil has excellent corrosion resistance in various corrosive media, such as acid, alkali, salt and other solutions, as well as organic solvents. It can still hold up good corrosion resistance at high temperatures. Moreover, it has good high-temperature strength and creep properties and can work stably for a long time in high-temperature environments. It is ideal for high-temperature equipment in aviation, chemical industry and other fields. 309 stainless steel coil can be formed and welded through various processing methods and has good processing performance. Lastly, 309 stainless steel is non-magnetic and works for manufacturing parts and components without magnetic requirements.
Product Parameters
Item | Standard Specification |
Product Name | 309/309S Stainless Steel Coil |
Product Type | Steel Coil |
Thickness | 2.5mm – 10.0mm |
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc. |
Width | 610mm – 2000mm |
Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. |
Surface Finish | BA, 2B, NO.1, NO.4, 4K, HL, 8K, etc. |
Production Technology | Hot Rolling, Cold Rolling |
Edge Processing | Edging, Trimming |
Certificate | ISO, SGS, BV, etc. |
Typical Applications
Widely used in high temperature and electrical industry, medical equipment manufacturing, construction field, chemical industry, food industry, agriculture and ship parts, food and beverage packaging, kitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc.
Chemical Composition (Mass Fraction)
Element | Content Standard | Element | Content Standard |
C (Carbon) | ≤ 0.08 | Ni (Nickel) | 12.0～15.0 |
Si (Silicon) | ≤ 0.75 | S (Sulfur) | ≤ 0.03 |
Mn (Manganese) | ≤ 2.0 | P (Phosphorus) | ≤ 0.045 |
Cr (Chromium) | 22.0～24.0 | – | – |
Mechanical Properties
Item | Standard Requirement |
Tensile Strength Kb (MPa) | ≥ 515 |
Yield Strength σ0.2 (MPa) | ≥ 205 |
Elongation D5 (%) | ≥ 35 |
Hardness | ≤ 217HB |
Physical Performance
Item | Standard Value |
Density (g/cm³) | 7.98 |
Modulus of Elasticity (Gpa) | 200 |
Coefficient of Thermal Expansion (10⁻⁶/°C) | 14.9 |
Coefficient of Thermal Conductivity (W/m·K) | 15.6 |
Resistivity (ΜΩ·cm) | 78 |
Service & Support
Customizable sizes, surface finishes and processing services are available
Stable supply, fast delivery and a complete quality inspection system
Relevant certification certificates and third-party inspection reports can be provided
Support wholesale, export, OEM and ODM cooperation
