Duplex stainless steel is called special stainless steel because it is composed of austenite and iron. Duplex stainless steel has good mechanical properties, such as high strength, high hardness, and good toughness; good corrosion resistance, resistance to chlorides, pitting, and acid; good welding performance, good cold formability, and high overall cost performance.
Duplex stainless steel is often used in oil and gas, chemicals and pharmaceuticals, marine and environmental protection, construction and infrastructure, energy and power fields, etc.
Email : contact@zunkaisteel.com
Phone/Whatsapp : +15169002039
Addess : Huaiyin District,Jinan City,Shandong,China.
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Stainless Steel Coil/Sheet/Plate Information
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Technique |
Surface Finish
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Grade Series
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Thickness(mm)
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Width(mm)
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Main Dimension
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20-850
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1000
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1219
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1240
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1250
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1500
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Hot Rolled
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No.1 / 2E
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201/304/316L
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2.2-12.0
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√
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√
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√
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√
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√
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Cold Rolled |
2B
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201/304/316L
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0.25-3.0
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√
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√
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√
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√
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√
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√
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410S/430
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410S/430
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0.25-3.0
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√
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√
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√
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√
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No.4 /Hairline
Mirror / Linen
SB
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201/304/316L
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0.22-3.0
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√
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√
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√
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√
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√
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√
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410S/430
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410S/430
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0.25-3.0
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√
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√
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√
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√
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√
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BA
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201/304
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0.2--1.8
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√
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√
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√
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√
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√
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√
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410S/430
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410S/430
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0.25-3.0
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√
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√
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√
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2BA
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304/410S/430
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0.25-2.0
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√
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√
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√
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√
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If you need, we can customize the size according to your requirements
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| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| 201 | ≤0.15 |
≤0.75 |
5.5-7.5 | ≤0.06 | ≤0.03 | 3.5-5.5 | 16.0-18.0 | - |
| 202 | ≤0.15 | ≤1.0 | 7.5-10.0 | ≤0.06 | ≤0.03 | 4.-6.0 | 17.0-19.0 | - |
| 301 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 6.0-8.0 | 16.0-18.0 | - |
| 302 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 8.0-10.0 | 17.0-19.0 | - |
| 304 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 8.0-10.5 | 18.0-20.0 | - |
| 304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 9.0-13.0 | 18.0-20.0 | - |
| 309S | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 12.0-15.0 | 22.0-24.0 | - |
| 310S | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.035 | ≤0.03 | 19.0-22.0 | 24.0-26.0 | - |
| 316 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 |
| 316L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 |
12.0-15.0 |
16.0-18.0 | 2.0-3.0 |
| 321 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤0.03 | 9.0-13.0 | 17.0-19.0 | - |
| 630 | ≤0.07 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 3.0-5.0 | 15.5-17.5 | - |
| 631 | ≤0.09 | ≤1.0 | ≤1.0 | ≤0.030 | ≤0.035 | 6.50-7.75 | 16.0-18.0 | - |
| 904L | ≤2.0 | ≤0.045 | ≤1.0 | ≤0.035 | - | 23.0-28.0 | 19.0-23.0 | 4.0-5.0 |
| 2205 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.030 | ≤0.02 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 |
| 2507 | ≤0.03 | ≤0.80 | ≤1.2 | ≤0.035 | ≤0.02 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 |
| 2520 | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.045 | ≤0.03 | 0.19-0.22 | 0.24-0.26 | - |
| 410 | ≤0.15 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | - | 11.5-13.5 | - |
| 430 | ≤0.12 | ≤0.75 | ≤1.0 | ≤0.040 | ≤0.03 | ≤0.60 | 16.0-18.0 | - |
| ITEM | Stainless Steel coil |
| Brand | RONSCO,BAOSTEEL, JISCO, TISCO, etc. |
| Grade |
201.202.301.302.304.304L.310S.316.316L.321.430.430A.309S.2205.2507.2520.430.630.631 .410.440.904Lect. Or Customized |
| Certificate |
SGS,BV,IQI,TUV,ISO,etc |
| Length |
As Customer requirements |
| Surface | No.1, 2B, BA, 8K Mirror, Hairline,satin, Embossed,brush,No.4,HL,matt,pvc film,laser film. |
| Standard | GB, AISI, ASTM, ASME, EN, BS, DIN, JIS |
| Package | Standard export sea-worthy packing or customized |
| MOQ | 5 Ton |
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Surface Finished
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Characteristics
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Characteristics
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NO.1
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Finished by hot-rolling, smoother and pickling, characterized by white pickled surface.
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Chemical industry equipment, Industrial tanks.
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2B
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Finished by anneal treatment, pickling after cold rolling, followed by skin pass line to more brighter and smoother surface.
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General application medical instruments, Tableware.
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BA
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Bright anneal treatment after cold rolling.
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Kichen utenstil, Kitchen ware,Architectural purpose.
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NO.4(Satin)
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Finished by incontinuous linear brushing
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Architecture,industries,Escalators, Kitchen ware, Vehicles.
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Hairline
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Finished by continuous linear brushing
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8K(mirror)
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A mirror-like reflective surface by polishing with finer abrasives over 800 mesh.
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Refletor, Mirror, Interior- Exterior decoration for building.
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Mechanical Properties|
Tensile Strength Kb (MPa) |
Yield Strength σ0.2 (MPa) |
Elongation D5 (%) |
Hardness |
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≥ 520 |
≥ 205 |
≥ 40 |
≤ 187HB ;≤ 90HRB;≤ 200HV |
Physical Performance
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Density(g/cm³) |
Modulus of Elasticity(Gpa) |
Coefficient of Thermal Expansion(10-6/°C) |
Coefficient of Thermal Conductivity(W/m*K) |
Resistivity(ΜΩ. cm) |
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8.03 |
193 |
16.9 |
16.2 |
72 |
