SS 410HT Stainless Steel is a martensitic stainless steel grade widely utilized in India across various demanding sectors. Known for its high strength, moderate corrosion resistance, and good hardness, SS 410HT finds extensive application in the manufacturing of components requiring wear resistance and elevated temperatures. Indian industries appreciate SS 410HT for its balance of mechanical properties and cost-effectiveness. Key sectors like the automotive, oil & gas, and general engineering industries rely on this grade for critical parts. The
Chemical Composition of SS 410HT
SS 410HT Stainless Steel: Chemical Composition
| Element | Weight % |
| Iron (Fe) | Balance |
| Chromium (Cr) | 11.5 – 13.5 |
| Manganese (Mn) | Max 1.5 |
| Silicon (Si) | Max 1.0 |
| Carbon (C) | Max 0.15 |
| Phosphorus (P) | Max 0.04 |
| Sulfur (S) | Max 0.03 |
Mechanical Properties of SS 410HT
SS 410HT Stainless Steel: Mechanical Properties
| Property | Value |
| Ultimate Tensile Strength (UTS) | 650 – 800 MPa (min based on heat treatment) |
| Yield Strength (YS) | 450 – 650 MPa (min based on heat treatment) |
| Elongation at Break | 15 – 20% (min based on section size) |
| Hardness (Brinell) | 180 – 220 HB (Typical condition H) |
| Density | 7.75 g/cm³ |
| Modulus of Elasticity | 190 – 210 GPa |
SS 410HT Stainless Steel: Available Forms in India
| Shape | Typical Sizes | Standard Length/Quantity |
| Round Bars | 10 mm – 100 mm diameter | 3 – 6 meters |
| Plates | 3 mm – 50 mm thickness | Custom cut pieces |
| Sheets | 0.5 mm – 3 mm thickness | 1m x 2m, 1.2m x 2.4m |
| Forgings | Custom shapes | As per order |
| Wires | 0.5 mm – 10 mm diameter | Spools |
SS 410HT Stainless Steel: Real-world Applications
- Centrifugal Pumps: Impellers and casings requiring good wear resistance.
- Valves: Valve stems, seats, and bodies in moderate corrosive environments.
- Fasteners: Bolts, nuts, and screws used in high-stress applications.
- Knife Manufacturing: Blades for industrial knives and cutting tools.
- Pump Shafts: Components needing strength and resistance to fatigue.
- Bearing Races: For applications demanding durability and hardness.
- General Engineering: Components subject to mild corrosion and wear.
- Oil & Gas Sector: Downhole tools and equipment components.
- Food Processing Equipment: Parts requiring hardness and moderate corrosion resistance.
SS 410HT Stainless Steel: Machinability & Weldability
Machining SS 410HT requires careful consideration due to its martensitic structure, which can be harder than austenitic grades. It is best machined in the hardened and tempered condition. For optimal results with SS 410HT, use sharp, rigid tools made of high-speed steel or carbides. Cutting speeds should be moderate, and ample lubrication is essential to prevent tool overheating and ensure a good surface finish. Avoid excessive feed rates, which can lead to work hardening. SS 410HT is generally considered weldable, but preheating may be required, especially for thicker sections. It is recommended to preheat SS 410HT to approximately 150-250°C before welding. Shielded Metal Arc Welding (SMAW) using appropriate electrodes like E410-15 or E410-16 is common. Post-weld heat treatment (PWHT) is often necessary to restore toughness and relieve residual stresses; this typically involves tempering at 600-700°C followed by air cooling. Annealing is crucial to soften the material for subsequent machining or forming operations.SS 410HT Stainless Steel: Heat Treatment & Processing
The heat treatment of SS 410HT is critical to achieving its desired mechanical properties. Annealing SS 410HT is typically performed at 815-870°C, followed by slow cooling in the furnace to a hardness below 217 HB, which softens the material for machining. Hardening involves heating SS 410HT to 925-1000°C and rapidly quenching in oil or air. This process transforms the austenite to martensite, significantly increasing hardness. Tempering SS 410HT subsequent to hardening is essential to reduce brittleness and achieve the desired strength and toughness balance. Tempering temperatures vary widely based on the application, commonly ranging from 400°C to 700°C, followed by air cooling. Higher tempering temperatures yield higher toughness but lower strength. A typical temper for the 410HT designation falls within this range, resulting in the specified mechanical properties. Normalizing is not a common practice for SS 410HT but can be done by heating to 900-950°C and air cooling to achieve a finer grain structure if required.SS 410HT Stainless Steel: Sourcing in India
SS 410HT stainless steel is readily available from major Indian producers such as Jindal Stainless, SAIL, and various specialized alloy manufacturers. Key distribution hubs in Mumbai, Pune, and Chennai ensure widespread accessibility for B2B buyers across the country. Minimum Order Quantities (MOQ) for SS 410HT can vary, with larger quantities often available ex-stock from major stockists, while custom sizes or specific forms might require a negotiated MOQ. The price band for SS 410HT in India typically ranges from INR 250 to INR 350 per kilogram, depending on the form (bar, sheet, plate), quantity, and prevailing market conditions. Buyers should expect Material Test Certificates (MTC) as per EN 10204 3.1 as standard, detailing the chemical and mechanical properties of the specific batch of SS 410HT supplied. Positive Material Identification (PMI) is also commonly requested and readily available.SS 410HT Stainless Steel: International Equivalents
| Standard | Code |
| IS | X15Cr13 (Similar conceptual grade) |
| ASTM | A276 UNS S41000 (Type 410) |
| EN | X12Cr13 (1.4006) |
| JIS | SUS 410 |
| DIN | 1.4006 |
| GOST | 08Ch13 |
FAQs about SS 410HT
What are the primary applications for SS 410HT Stainless Steel in India?
SS 410HT stainless steel is predominantly used in India for manufacturing components that require a blend of high strength, hardness, and moderate corrosion resistance. Key applications include pump shafts, valve parts, fasteners, knife blades, bearing races, and wear-resistant components in the oil & gas and automotive sectors. Its robustness makes SS 410HT ideal for parts operating under stress and facing moderate wear.
How does the heat treatment affect the properties of SS 410HT?
Heat treatment is fundamental to SS 410HT's performance. Hardening by heating to 925-1000°C and quenching creates a martensitic structure, increasing hardness significantly. Subsequent tempering, typically between 400°C and 700°C, refines the hardness, enhances toughness, and reduces brittleness, allowing SS 410HT to meet specific application requirements. The 'HT' designation commonly implies a hardened and tempered condition for SS 410HT.
What is the typical hardness range for SS 410HT?
The achievable hardness for SS 410HT heavily depends on its heat treatment condition. In a typical hardened and tempered (like 410HT) state, SS 410HT usually exhibits a Brinell hardness ranging from 180 to 220 HB. Post-quenching and before tempering, hardness can be considerably higher, often exceeding 40 HRC (approx. 400 HB), but this makes the material brittle. The specified range for SS 410HT ensures a balance of strength and ductility.
Can SS 410HT be welded, and what precautions are needed?
Yes, SS 410HT stainless steel can be welded, but it requires specific procedures. Due to its martensitic nature, preheating SS 410HT to around 150-250°C is recommended, especially for thicker sections, to minimize the risk of cracking. SMAW with electrodes like E410-15 or E410-16 is suitable. Post-weld heat treatment (PWHT) involving controlled tempering is crucial to restore ductility and relieve stresses in the weld zone of SS 410HT.
Where can I source SS 410HT in India?
SS 410HT stainless steel is widely available from major Indian steel manufacturers like Jindal Stainless and SAIL, as well as numerous authorized stockists and distributors. Key industrial hubs such as Mumbai, Pune, and Chennai offer excellent accessibility. MetaleMart provides a platform to connect with verified suppliers offering competitive pricing and timely delivery for SS 410HT across India.
What are the main differences between SS 410HT and SS 304?
The primary differences lie in their microstructure and properties. SS 410HT is a martensitic stainless steel, heat-treatable to high strength and hardness, with moderate corrosion resistance. SS 304 is an austenitic stainless steel, non-heat-treatable, offering superior corrosion resistance and excellent formability but lower strength compared to SS 410HT. SS 410HT is chosen for wear resistance, while SS 304 is for general corrosion applications.