Stainless Steel Coil
Basic Introduction
What is a stainless steel coil?
Stainless steel coils are the most common form of stainless steel materials, and it’s also the most versatile. The stainless steel coil is one of the most popular raw materials in construction and manufacturing. The stainless steel coil is initially produced in slabs, which are then put through a conversion process using a Z mill, which converts the slab into the stainless steel coil before further rolling. These wide stainless steel coils are typically called ‘mill edge coils’. Stainless steel coils are further processed using a range of manufacturing techniques such as slitting, where the wide steel coil is slit into a multitude of strands. After slitting, the stainless steel forms a batch of steel coils taken from the mother stainless steel coil, and these are referred to by many different types.
Because of its unique mechanical and physical properties, stainless steel coils have been widely used in the production of industrial and indoor services. It are rugged, corrosion-resistance, lightweight, and requires low maintenance. Many stainless steel coils are widely used in industrial projects. Many grades of stainless steel coils can be found each with different performance and availability. These are the stainless steel coil features.
Details of Stainless Steel Coil
| Standard | ASTM A36, ASTM A283, ASTM A1008, ASTM A285, ASTM A515, ASTM A516,JIS G3141 and so on |
| Grade | ASTM A36, Gr. A. B. C. D, Gr 55, 60, 65, 70, Q235B, Q355B, and so on |
| Thickness (mm) | 1.5 to 6.0 |
| Width (mm) | 914, 1219, 1500, 2000 & customer-specific width. |
| Length (mm) | 6m or 12m or customer-specific cut-to-length. |
| Surface treatment | Black, Oiled, Painted, Galvanized, and so on |
Chemical Composition of Stainless Steel Coil
| Material Item | 201 | 202 | 304 | 316L | 430 |
| C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.035 | ≤0.12 |
| Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 |
| Mn | 5.5-7.5 | 7.5-10 | ≤2.00 | ≤2.00 | ≤1.00 |
| P | ≤0.06 | ≤0.06 | ≤0.045 | ≤0.045 | ≤0.040 |
| S | ≤0.03 | ≤0.03 | ≤0.030 | ≤0.030 | ≤0.030 |
| Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 |
| Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | ||
| Mo | 2.0-3.0 |
Mechanical Property of Stainless Steel Coil
| Material Item | 201 | 202 | 304 | 316 |
| Tensile Strength | ≥535 | ≥520 | ≥520 | ≥520 |
| Yield Strength | ≥245 | ≥205 | ≥205 | ≥205 |
| Extension | ≥30% | ≥30% | ≥35% | ≥35% |
| Hardness (HV) | <105 | <100 | <90 | <90 |
| Extension | ≥30% | ≥30% | ≥35% | ≥35% |
Surface of Stainless Steel Coil
| Surface | Characteristic | Summary of Manufacturing Method |
| NO.1 | Silvery white | Hot rolled to specified thickness |
| NO.2D | Silvery white | After cold rolling, heat treatment and pickling are carried out |
| NO.2B | Gloss is stronger than No.2D | After No.2D treatment, the final light cold rolling is carried out through the polishing roller |
| BA | As bright as a sixpence | No standard, but usually a bright annealed surface with high reflectivity. |
| NO.4 | Intermediate grinding | Polished surface obtained by grinding with 150~180# strop abrasive tape |
| HL | Hairline grinding | Suitable particle material for hair stripe grinding (150~240#) with many grains |
| NO.8 | Mirror ultrafinish | The mirror is ground with a polishing wheel |
Size Chart of Stainless Steel Coils
| Grade | Finish | Thickness (mm) | Width (mm) |
| 304 | 2B & No. 4 PE | 0.55 | 914 & 1219 |
| 304 | 2B & No. 4 PE | 0.7 | 914 & 1219 |
| 304 | 2B, 2B PE, No. 4 PE & BA PE | 0.9 | 750, 914 & 1219 |
| 304 | 2B, 2B PE, No. 4 PE & BA PE | 1.2 | 750, 914, 1050, 1219 & 1500 |
| 304 | 2B, 2B PE & No. 4 PE | 1.5 | 914, 1219 & 1500 |
| 304 | 2B, 2B PE & No. 4 PE | 1.6 | 914, 1219 & 1500 |
| 304 | 2B, 2B PE & No. 4 PE | 2 | 914, 1219 & 1500 |
| 304 | 2B, 2B PE & No. 4 PE | 2.5 | 914, 1219 & 1500 |
| 304 | 2B, 2B PE & No. 4 PE | 3 | 914, 1219 & 1500 |
| 304L | 2B & 2B PE | 4 | 1500 & 2000 |
| 316 | 2B | 0.55 | 1219 |
| 316 | 2B | 0.7 | 1219 |
| 316 | 2B | 0.9 | 1219 |
| 316 | 2B & No. 4 PE | 1.2 | 1219 |
| 316 | 2B & No. 4 PE | 1.5 | 914, 1219 & 1500 |
| 316 | 2B & No. 4 PE | 1.6 | 914, 1219 & 1500 |
| 316 | 2B & No. 4 PE | 2 | 914, 1219 & 1500 |
| 316 | 2B & No. 4 PE | 2.5 | 914, 1219 & 1500 |
| 316 | 2B & No. 4 PE | 3 | 914, 1219 & 1500 |
| 316L | 2B & 2B PE | 4 | 1500 & 2000 |
Application of Stainless Steel Coil
- Construction and Construction by-products
- Electrical and Electronic Industry
- Food and Beverage Industry
- Medical and Surgical Equipment
- Automotive Industry
- Healthcare equipment
- Industrial machinery
- Petroleum waste gas combustion pipeline
- Engine exhaust pipe
- Boiler shell, heat exchanger, heating furnace parts
- Silencer parts for diesel engines
- Boiler pressure vessel
- Chemical transport truck
- Expansion joint
- Spiral welded pipes for furnaces and dryers
