JISCO Bright Polished BA 8K Mirror 430 Stainless Steel Sheet Cold Rolled in Stock
Price:
1.34
MOQ:
150
Delivery Time:
Negotiable
Product Description
JISCO Bright Polished BA 8K Mirror 430 Stainless Steel Sheet
Premium quality 430 stainless steel sheets available in stock with bright polished BA 8K mirror finish.
Product Specifications
| Product | 430 Stainless Steel Sheet |
| Thickness | Cold rolled: 0.3 - 3.0mm Hot rolled: 4.0 - 10.0mm |
| Standard Size | Cold rolled: 1000×2000mm, 1219×2438mm Hot rolled: 1500×6000mm |
| Surface | 2B, BA, NO.4, Hairline, Mirror 8K, etc. |
| Brand | TISCO, JISCO, POSCO, BAOSTEEL |
| Standard | ASTM A240 / JIS G4305 / EN 10088-2 |
| Other Grades | 201, 202, 301, 304, 304L, 309S, 310S, 316L, 316Ti, 317L, 321, 347, 410, 420, 430, 440, 441, 443, 444, 2205, 2507, etc. |
| Our Service | Slit Cutting, Surface Processing |
430 Stainless Steel Introduction
Stainless steel grade 430 is a non-hardenable steel containing straight chromium, belonging to the ferritic group of steels. Known for its good corrosion resistance and formability, coupled with practical mechanical properties, it can be used in various chemical applications.
Grade 430F stainless steel is typically provided in bar form for use in automatic screw machines, while grade 434 offers similar properties with enhanced corrosion resistance due to molybdenum content.
Chemical Composition
Table 1 - Chemical Compositions of Grade 430 Stainless Steels
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| 430 | - / 0.12 | - / 1 | - / 1 | - / 0.04 | - / 0.030 | 16 / 18 | - | - / 0.50 | - |
| 430F | - / 0.12 | - / 1.25 | - / 1 | - / 0.06 | 0.15 / - | 16 / 18 | - | - | - |
Mechanical Properties
Table 2 - Mechanical Properties of Grade 430 Stainless Steels
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
|---|---|---|---|---|---|
| 430 | 483 | 310 | 22 | 85 | 183 |
| 430F | 552 typical | 379 typical | 25 typical | - | 262 |
Physical Properties
Table 3 - Physical Properties of Grade 430 Stainless Steels (Annealed Condition)
| Grade | Density (kg/m³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) |
|---|---|---|---|---|---|---|
| 430 | 7750 | 200 | 10.4 (0-100°C) 11.0 (0-315°C) 11.4 (0-538°C) | 26.1 (at 100°C) 26.3 (at 500°C) | 460 | 600 |
| 430F | 7750 | 200 | 10.4 (0-100°C) 11.0 (0-315°C) 11.4 (0-538°C) | 26.1 (at 100°C) 26.3 (at 500°C) | 460 | 600 |
Grade Specification Comparison
Table 4 - Grade Specifications for 430 Stainless Steels
| Grade | UNS No | Old British BS | Old British En | Euronorm No | Euronorm Name | Swedish SS | Japanese JIS |
|---|---|---|---|---|---|---|---|
| 430 | S43000 | 430S17 | 60 | 1.4016 | X8Cr17 | 2320 | SUS 430 |
| 430F | S43020 | - | - | 1.4104 | X12CrMoS17 | 2383 | SUS 430F |
Possible Alternative Grades
Table 5 - Possible Alternatives to Grade 430 Stainless Steel
| Grade | Reasons for Choosing Alternative |
|---|---|
| 430F | Higher machinability than 430 is needed in bar product, and reduced corrosion resistance is acceptable |
| 434 | Better pitting resistance is required |
| 304 | Slightly higher corrosion resistance is needed, together with greatly improved ability to be welded and cold formed |
| 316 | Much better corrosion resistance is needed, coupled with greatly improved ability to be welded and cold formed |
| 3CR12 | Lower corrosion resistance is acceptable in a cost-critical application |
Corrosion Resistance
All ferritic grades, including stainless steel grade 430, offer excellent stress corrosion cracking resistance. Grade 430 provides good corrosion resistance to numerous substances, with maximum resistance achieved in well-polished or buffed condition. Its pitting and crevice corrosion resistance is comparable to grade 304. Grade 430F, being a high-sulfur free machining grade, offers comparatively lower resistance to pitting and crevice corrosion than non-free machining grades.
Heat Resistance
Stainless steel grade 430 can resist oxidation up to 870°C (1598°F) in intermittent usage and up to 815°C (1499°F) in continuous usage. However, it may become brittle at room temperature, particularly after prolonged heating in the 400-600°C (752-1112°F) range, which can be mitigated through annealing.
Heat Treatment
Solution annealing involves heating grade 430 to 815-845°C (1499-1553°F), followed by slow furnace cooling to 600°C (1112°F) and rapid air-cooling. Slow cooling between 540-400°C (1004-752°F) may cause embrittlement. For sub-critical annealing, heating to 760-815°C (1400-1499°F) followed by air-cooling or water quenching is recommended. This stainless steel cannot be hardened by thermal treatment.
Welding
Welding grade 430 requires pre-heating at 150-200°C (302-392°F). If embrittlement occurs in welded metal, post-weld annealing at 790-815°C (1454-1499°F) can address the issue, though grain refinement will not occur. Recommended filler rods include grade 430, 308L, 309, or 310 based on application requirements.
Machining
Grade 430 offers easier machinability compared to standard austenitic steels like grade 304, though galling may occur. Lightly drawn bars machine more easily than annealed bars, while grade 430F provides excellent machinability.
Fabrication
Grade 430's low work hardening rate facilitates easy bending and forming operations. However, its low ductility rate limits rigorous operations. Grade 430 wire can handle rigorous cold heading, with sub-critical intermediate annealing potentially required for extreme cold working.
Applications
- Dish washer linings
- Refrigerator cabinet panels
- Element supports and fasteners
- Stove trim rings and chimney liners
- Automotive trim and lashing wires
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Company
TSING SHAN STEEL INDUSTRIAL LIMITED
Location
NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
Contact Person
Gao Ben