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SS 431 Stainless Steel Angle Channel is a high-strength martensitic grade known for its excellent toughness, corrosion resistance, and superior mechanical properties. This grade contains a high chromium content, which provides outstanding resistance to oxidation and corrosion in mild environments. SS 431 Angle Channels are widely used in applications where high tensile strength and hardness are essential, combined with moderate corrosion resistance. These channels are precisely engineered to provide durability, dimensional accuracy, and structural stability for demanding industrial and architectural applications.
The SS 431 Angle Channel is heat-treatable, allowing it to achieve excellent mechanical properties, making it suitable for shafts, pump parts, and marine hardware. It maintains its integrity under heavy loads and harsh environmental conditions. This steel grade is often preferred in industries requiring a combination of strength and corrosion resistance, such as petrochemical, aerospace, and marine sectors. Its good machinability and weldability further enhance its usability in manufacturing and fabrication processes.
With a chromium content of around 15-17% and nickel up to 2.5%, SS 431 offers an ideal balance between corrosion resistance and toughness. It exhibits remarkable resistance to water, steam, and certain chemicals, making it ideal for use in chemical processing plants and marine equipment. The angle channels are available in different sizes and surface finishes like hot rolled, annealed, and pickled to meet various design and structural requirements.
SS 431 Stainless Steel Angle Channels are also valued for their excellent fatigue strength and resistance to stress corrosion cracking. They perform effectively even at moderately elevated temperatures and can be used for applications involving exposure to water, oil, or mild acids. The superior mechanical strength makes them a popular choice in heavy-duty applications like shafts, fasteners, and machinery components. Additionally, their precise dimensional structure ensures easy assembly and installation in construction projects.
These angle channels are available in equal and unequal dimensions to suit various engineering requirements. Equal angle channels are typically used in structural and architectural applications, while unequal ones are ideal for machinery and support frameworks. SS 431 Angle Channels are manufactured under strict quality standards to ensure uniformity, surface smoothness, and dimensional accuracy. They are supplied in different lengths, thicknesses, and finishes depending on project specifications.
One of the main advantages of SS 431 over other martensitic grades is its excellent combination of corrosion resistance and high tensile strength. It can be hardened by heat treatment to achieve a tensile strength exceeding 1000 MPa. This makes it an ideal material for aerospace fittings, valves, pump shafts, and marine propeller shafts. Its ability to retain high strength even after heat exposure ensures long-term durability and performance in aggressive environments.
In summary, SS 431 Stainless Steel Angle Channel is a versatile, reliable, and durable product used across multiple industries where high performance and strength are required. It provides outstanding resistance to wear and tear, ensuring long service life with minimal maintenance. Available in customized dimensions and finishes, SS 431 Angle Channels offer an efficient solution for structural, mechanical, and architectural needs while maintaining superior quality and corrosion resistance standards.
Specification Table
| Property | Specification / Details |
|---|---|
| Material Grade | SS 431 (UNS S43100) |
| Steel Type | Martensitic stainless steel — heat treatable |
| Form | Angle Channel (Equal & Unequal) |
| Standard / Specification | Manufactured to common industry dimensions and tolerances; consult purchaser specification for exact standard requirements |
| Common Dimensions | Leg lengths: 20 mm — 200 mm (custom sizes available); Thickness: 3 mm — 25 mm |
| Length | Standard: 1 m / 2 m / 3 m; Available in cut-to-length or full-length bundles as per order |
| Surface Finish | Hot-rolled, Pickled & Oiled, Annealed (bright), Mill finish; additional surface treatments on request |
| Heat Treatment | Supply condition: Annealed; can be supplied quenched & tempered / hardened on request to meet mechanical requirements |
| Tolerances | Dimensional tolerances as per manufacturer’s standard practice; tighter tolerances available on request |
| Marking & Traceability | Each bundle/length marked with grade, heat/lot number, and manufacturer ID for traceability |
| Packing | Bundled and strapped for export; wooden crate or palletised packing available for long shipments |
| Typical Applications | Marine fittings, pump shafts, structural supports, fasteners, valves, shafts, machine components |
| Quality & Tests | Visual inspection, dimensional check, hardness test and chemical analysis available on request; third-party inspection accepted |
| Compliance / Certifications | Material test certificate (MTC) per order; ISO manufacturing practices; additional certificates (e.g., EN/ASTM) on request |
| Custom Options | Custom lengths, pre-machining, drilling, cut-to-size, and special surface treatments available upon enquiry |
Chemical Composition (Typical ranges for SSIS)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | 0.12 | 0.20 |
| Silicon (Si) | — | 1.00 |
| Manganese (Mn) | — | 1.00 |
| Phosphorus (P) | — | 0.040 |
| Sulfur (S) | — | 0.030 |
| Chromium (Cr) | 15.00 | 17.00 |
| Nickel (Ni) | 1.25 | 2.50 |
| Molybdenum (Mo) | — | 0.75 |
| Nitrogen (N) | — | 0.05 |
| Iron (Fe) | Balance | |
Mechanical Properties (Typical)
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 850 – 1000 MPa | Hardened & Tempered |
| Yield Strength (0.2% Proof) | 600 MPa (min) | Hardened & Tempered |
| Elongation | 15% (min) | In 50 mm gauge length |
| Hardness | 250 – 300 HB | Brinell Hardness (Hardened) |
| Impact Strength | 40 J (typical) | At room temperature |
| Modulus of Elasticity | 200 GPa | Typical value |
| Density | 7.75 g/cm³ | At 20°C |
| Melting Point | 1425 – 1510°C | Approximate range |
| Poisson’s Ratio | 0.27 – 0.30 | Typical range |
Equivalent Grades
| Standard | Grade | Description / Specification |
|---|---|---|
| UNS | S43100 | Unified Numbering System designation for 431 stainless steel |
| AISI / SAE | 431 | American Iron and Steel Institute grade designation |
| EN | 1.4057 | European Standard designation (EN 10088-3) |
| BS | 431S29 | British Standard grade (BS 970) |
| JIS | SUS 431 | Japanese Industrial Standard equivalent |
| GOST | 12Ch17 | Russian equivalent grade |
| AFNOR | Z15CN17-03 | French equivalent under AFNOR standard |
| DIN | X17CrNi16-2 | German DIN standard equivalent |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Size (mm) | Thickness (mm) | Weight (kg/m) | Type |
|---|---|---|---|
| 20 × 20 | 3 | 0.88 | Equal Angle |
| 25 × 25 | 3 | 1.10 | Equal Angle |
| 30 × 30 | 3 | 1.30 | Equal Angle |
| 35 × 35 | 4 | 1.90 | Equal Angle |
| 40 × 40 | 4 | 2.30 | Equal Angle |
| 50 × 50 | 5 | 3.65 | Equal Angle |
| 60 × 60 | 6 | 5.20 | Equal Angle |
| 65 × 65 | 6 | 5.80 | Equal Angle |
| 75 × 75 | 6 | 6.80 | Equal Angle |
| 80 × 80 | 8 | 9.60 | Equal Angle |
| 90 × 90 | 8 | 10.90 | Equal Angle |
| 100 × 100 | 10 | 15.00 | Equal Angle |
| 130 × 130 | 12 | 26.90 | Equal Angle |
| 150 × 150 | 12 | 31.50 | Equal Angle |
| 200 × 200 | 15 | 52.50 | Equal Angle |
Types Of SS 431 Angal channel
Stainless Steel Angal & channel
Monel 400 Angal & channel
Inconel 600 Angal & channel
Hastelloy Angal & channel
Super Duplex Angal & channel
Duplex Angal & channel
Nickel Angal & channel
Monel K500 Angal & channel
Frequently Asked Questions (FAQ)
What is SS 431 Stainless Steel Angle Channel?
SS 431 Stainless Steel Angle Channel is a martensitic grade stainless steel product known for its high tensile strength, hardness, and moderate corrosion resistance. It is commonly used in structural, marine, and mechanical applications that demand both durability and performance under stress.
What are the key features of SS 431 Angle Channel?
SS 431 Angle Channels offer excellent mechanical strength, good resistance to corrosion and oxidation, and high toughness after heat treatment. They are also known for good machinability and dimensional accuracy, making them suitable for various industrial and architectural applications.
In which industries is SS 431 Angle Channel used?
SS 431 Angle Channels are widely used in marine, chemical processing, aerospace, and mechanical industries. They are ideal for manufacturing shafts, pump components, valves, propeller shafts, fasteners, and structural frameworks that require superior strength and corrosion resistance.
Is SS 431 Stainless Steel corrosion-resistant?
Yes, SS 431 offers good resistance to corrosion, especially in freshwater and mild chemical environments. However, it is not as corrosion-resistant as austenitic grades like SS 304 or SS 316. For optimal performance, it is often used in hardened or tempered conditions.
Can SS 431 Angle Channel be welded or machined?
SS 431 can be welded and machined with proper techniques. Preheating before welding and post-weld heat treatment are recommended to maintain strength and prevent cracking. It also exhibits good machinability in the annealed condition.
What sizes and forms are available in SS 431 Angle Channels?
SS 431 Angle Channels are available in both equal and unequal angles with leg sizes ranging from 20 mm to 200 mm and thicknesses from 3 mm to 15 mm. They can be supplied in various finishes such as hot rolled, annealed, or pickled as per customer requirements.
Angle Channels Supplier
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Angle Channels Exporter
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