AISI 434 Stainless Steel Strips 0.5mm 0.6mm 0.8mm ASME SA240
AISI434 Stainless Steel Strips Alloy 434 SS Strips Thickness 0.5mm 0.6mm 0.8mm ASME SA240
Product Attributes
| Attribute | Value |
| Products | SUS316L stainless steel strip |
| Thickness | 0.3-3.0mm |
| Width | within 1219mm |
| MOQ | 500 kgs |
| Other | 201 301 304 304L 309S 310S 316L 316Ti 410 420 430 436 439 441 444 440A/B/C,2205,2507,904L,C276,400,600,625,926,825.etc |
| Surface | BA 2B NO.4 HL 8K NO.1 |
| Standard | ASTM EN GB JIS |
| Packing | wooden frame and water proof paper |
AISI 434 stainless steel strips are ferritic chromium-molybdenum alloys offering enhanced corrosion resistance—particularly against chlorides—at a lower cost than nickel-based grades. Compliant with ASME SA240 for pressure vessel and general applications, these cold-rolled strips are supplied in precise thicknesses (0.5mm, 0.6mm, 0.8mm) for demanding industrial sectors.
1. Standard Compliance & Key Specifications
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Primary Standard: ASME SA240 governs chemical composition, mechanical properties, and tolerances for sheets/strips.
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Thickness Range: 0.5mm, 0.6mm, 0.8mm (cold-rolled), with widths up to 2,000 mm and custom coil lengths.
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Tolerances: Strict adherence to ASME SA240 dimensional tolerances (±0.02 mm for thin gauges).
2. Chemical Composition & Core Properties
Chemical Requirements (Weight %)
| Element | Min (%) | Max (%) |
|---|---|---|
| C | - | 0.12 |
| Cr | 16.0 | 18.0 |
| Mo | 0.75 | 1.25 |
| Mn | - | 1.00 |
| Si | - | 1.00 |
| S | - | 0.03 |
| P | - | 0.04 |
Key Enhancements:
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Molybdenum Addition: Improves pitting/crevice corrosion resistance in chloride environments (e.g., automotive exteriors, coastal structures).
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Low Carbon: Minimizes sensitization during welding, though post-weld annealing is recommended for critical applications.
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Ferritic Structure: Inherent magnetic properties and resistance to stress corrosion cracking.
Mechanical Properties (Annealed State)
| Property | Value |
|---|---|
| Tensile Strength | ≥450 MPa |
| Yield Strength | ≥205 MPa |
| Elongation | ≥22% |
| Hardness (max) | 183 HB |
3. Surface Finishes and Forms
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Standard Finish: 2B (smooth, lightly reflective), BA (bright annealed), No.4 (brushed), HL (hairline).
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Forms: Precision slitted strips, coils (ID: 200–508 mm), or cut-to-length sheets.
4. Global Equivalent Grades
AISI 434 is standardized across major industrial regions:
| Region | Standard | Grade |
|---|---|---|
| USA | UNS/ASTM | S43400 |
| Japan | JIS | SUS 434 |
| Europe | DIN | 1.4113 |
| China | GB | 1Cr17Mo |
| UK | BS | 434 S 19 |
5. Heat Treatment & Fabrication Notes
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Annealing: 788–872°C (1450–1600°F), air-cooled to relieve stresses and restore corrosion resistance.
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Forging: Preheat to 1094–1149°C (2000–2100°F) to avoid cracking.
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Limitations:
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Cannot be hardened by heat treatment (ferritic structure).
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Moderate formability; avoid deep drawing without intermediate annealing.
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6. Industrial Applications
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Automotive: Trim, wheel covers, exhaust components (superior salt resistance vs. 430 grades).
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Consumer Durables: Kitchen appliances, sinks, washing machine drums.
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Industrial Hardware:
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Chemical tanks (non-oxidizing acid environments).
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Conveyor chains (e.g., LH0834SS/BL434SS chains for food processing).
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Electromagnetic components (valves, pump parts due to magnetic properties)
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7. Manufacturer & Quality Assurance
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Key Suppliers: TISCO (China), BAOSTEEL (China), POSCO (Korea)
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Testing: Chemical analysis (OES/XRF), tensile tests (ASTM E8), hardness validation.
8. Advantages vs. Limitations
| Advantages | Limitations |
|---|---|
| Cost-effective (Ni-free) | Lower toughness at cryogenic temps |
| Resists chloride SCC* | Poor cold forging performance |
| Magnetic for EM applications | Limited weld ductility |
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