SS 430
SS 430: Specifications | Grades & Standards | Product Types | Equivalent | Chemical | Mechanical | BW Fittings | Forged Fittings | Flanges | FAQ
Supplier & Exporter of Stainless Steel 430 Pipe Fittings and Flanges – Including SS 430 Forged Fittings, Buttweld Elbows, Tees, and Reducers, UNS S43000 Pipe Fittings & Flanges. ASTM A182 / A403 Certified, Providing High-Strength, Heat-Resistant, and Corrosion-Resistant Piping Solutions Exported to Netherlands, Turkey, Malaysia, Egypt, and Russia.
Best Export Prices: sales@midlandforgefittings.com
Midland Forge and Fittings Pvt. Ltd is a precision-focused manufacturer and exporter of high-performance Stainless Steel 430 pipe fittings, flanges. Utilizing advanced forging and fabrication technologies, the company delivers products that meet stringent international standards such as ASTM, ASME, and UNS S43000, ensuring excellent corrosion resistance, heat tolerance, and mechanical integrity.
With a robust quality management system and global supply network, we ensure consistent reliability, precise dimensional accuracy, and timely delivery, making our SS 430 piping components a trusted choice for clients seeking durable, high-strength, and technically advanced solutions.
Stainless Steel 430 is a ferritic stainless steel known for its excellent corrosion resistance, good formability, and moderate mechanical strength. It is primarily alloyed with 16–18% chromium, which provides resistance to oxidation and mild corrosion, while maintaining low carbon content (≤0.12%) for better weldability and dimensional stability. SS 430 exhibits good hardness, moderate tensile strength, and high resistance to stress corrosion cracking.
SS 430 is commonly used in pipe fittings, flanges, forged components, and buttweld fittings, where durability and resistance to high temperatures are required. It is ASTM A182 / A403 and UNS S43000 certified, ensuring compliance with international standards. The material is well-suited for industrial piping systems, HVAC ducts, heat exchangers, pumps, and decorative piping, particularly in environments that are mildly corrosive or require moderate heat resistance. While it is less corrosion-resistant than austenitic grades like SS 304, its cost-effectiveness, machinability, and long-term performance make it a preferred choice for many engineering applications.
Stainless Steel 430 Flanges - Specifications
430 SS pipe fittings – Grades & Standards
| Material / Grade | UNS | ASTM / ASME Standard | Product Type | Typical Applications |
|---|---|---|---|---|
| SS 430 | S43000 | ASTM A182 / A182M (Forged & Flanges), ASTM A403 / A403M (Buttweld Fittings) |
Forged Fittings, Flanges, Buttweld Fittings |
Industrial Piping, HVAC Systems, Heat Exchangers, Pumps, Decorative Piping, Low-Corrosion Applications |
SS 430 Series – Industrial Flanges, Fittings & Piping Products
Stainless Steel 430 ASTM Certified Pipe Fittings - Equivalent Grades
| Material / Property | SS 430 Equivalent |
|---|---|
| Material | Stainless Steel |
| Grade / UNS | 430 / UNS S43000 |
| ASTM / ASME | ASTM A240 / A182 / A403 |
| EN / DIN | X6Cr17 |
| JIS | 430 |
| GOST | 08Х17 |
| BS | 430S29 |
| AFNOR | Z6C17 |
Stainless Steel 430 High-Strength Piping Fittings - Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.12 max |
| Chromium (Cr) | 16.0 – 18.0 |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 1.0 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
| Iron (Fe) | Balance |
Corrosion-Resistant SS 430 Fittings - Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 450 – 550 |
| Yield Strength (MPa) | 205 |
| Elongation (%) | 22 – 24 |
| Hardness (Brinell, HB) | 179 – 217 |
| Modulus of Elasticity (GPa) | 200 |
| Shear Strength (MPa) | 280 – 300 |
| Melting Point (°C) | 1425 – 1510 |
High-Temperature Resistant SS 430 Buttweld Fittings – Seamless, Welded & Fabricated Types
Stainless Steel 430 Forged Flanges for Piping
Industrial SS 430 Forged Piping Solutions – Complete Guide
What is the difference between SS 430 and other stainless steels like SS 304 or SS 316?
SS 430 vs SS 304: SS 430 is ferritic/martensitic, less corrosion-resistant than SS 304, but more cost-effective and suitable for dry or mildly corrosive environments.
SS 430 vs SS 316: SS 316 has higher corrosion resistance due to molybdenum content and is suitable for highly corrosive environments, while SS 430 is more economical and better for moderate conditions.
Mechanical Differences: SS 430 offers good hardness and wear resistance but lower ductility and toughness compared to austenitic stainless steels.
What are the advantages of using SS 430 pipe fittings and flanges?
Corrosion Resistance: Suitable for mildly corrosive media such as water, air, and certain chemicals.
Heat Resistance: Can withstand temperatures up to 870°C in intermittent service.
Durability: High strength and wear resistance ensure long service life.
Cost-Effective: More economical than austenitic stainless steels like 304 or 316 while providing good corrosion resistance.
Easy Fabrication: Can be welded, machined, and formed to the required shapes.
Can SS 430 fittings and flanges be welded?
Yes, SS 430 can be welded using standard welding techniques such as TIG, MIG, or arc welding.
Precautions: Preheating and post-weld annealing may be required for certain thick sections to prevent cracking.
Filler metals compatible with SS 430 (such as 430 or 410 stainless steel rods) are recommended to maintain mechanical strength and corrosion resistance.