Strength and hardness matter more than corrosion resistance in many mechanical builds. Shafts, valve trim, and wear components need a grade that holds up under load. Panchdeep Metal Corporation, operating from Mumbai since 1991, supplies SS 415 Plate to fabricators who need that combination. Our work across round bars, hex bars, fasteners, and butt-weld fittings shapes how we source and test stainless steel 415 Plate, which is a part of our broader Stainless Steel Plate range.
SS 415 is a martensitic stainless steel. Chromium sits near 12%, with nickel added to lift toughness beyond straight 410-type grades. Quenching produces a hard martensite structure, and tempering afterward determines the balance between hardness and ductility. A higher tempering temperature drops hardness but adds toughness. This places SS 415 between basic 410 grades and precipitation-hardening stainless steels. Confirm the supplied condition before ordering, since annealed and quenched-and-tempered plates machine and weld differently.
| Specifications | ASTM A240, ASME SA240 |
| Standard | JIS, ASTM, AISI, GB, EN, DIN |
| Surface | 2B, 2D, BA, NO.4, NO.8, 8K, Mirror, Checkered, Embossed, Hair Line, Sand Blast, Brush, Etching |
| Finish | Cold rolled, Hot rolled |
| Width | 1000-2000mm |
| Length | 1000-6000mm |
| Thickness | 0.40mm – 6.00mm |
| Grade | C | Mn | P | S | Si | Ch | Ni | Mo |
| SS 415 | 0.05 max | 0.50-1.00 | 0.030 max | 0.030 max | 0.60 max | 11.5-14.0 | 3.5-5.5 | 0.50-1.00 |
| Tensile Strength R₃ N/mm² | 700-800 | 700-800 | 700-800 | 700-800 | 700-800 | 700-800 | 700-800 |
| 0.2% Offset Yield Strength Rᵖ ≥N/mm² | 520 | 520 | 520 | 520 | 520 | 520 | 520 |
| Elongation in 2 inches, % | 15 min | 15 min | 15 min | 15 min | 15 min | 15 min | 15 min |
This comparison comes up often among engineers evaluating martensitic grades. Both share a 12% chromium base, but nickel in 415 changes toughness and low-temperature behaviour. Anyone using SS 410 Plate for basic wear parts should check if that toughness justifies the switch.
| Feature | SS 415 | SS 410 |
| Stainless Type | Martensitic, nickel-added | Martensitic, basic 12% Cr |
| Strength | High after tempering | High after tempering |
| Hardness | High, tunable via heat treatment | High, less toughness at same hardness |
| Corrosion Resistance | Moderate, better than 410 | Moderate, lower than 415 |
| Heat Treatment | Quench and temper | Quench and temper |
| Selection | Toughness plus hardness both matter | Simpler wear-only parts |
Each batch runs through a fixed verification sequence before dispatch. Chemical composition analysis confirms the alloy is within specification limits and PMI testing cross-checks material identity. Ultimate strength is determined by tensile tests. Yield strength readings show the load at which permanent deformation begins. Elongation values show ductility in the tempered condition. Then hardness testing against the ordered condition. Deviations are detected by dimensional and visual inspection, ultrasonic testing if specified, and third-party inspection if requested. Every shipment has a Mill Test Certificate with traceability to the heat number.
Panchdeep Metal Corporation keeps SS 415 plate in stock sizes and arranges custom sizes against drawings. We offer cutting on request and issue material certification with test reports matched to each batch. Third-party inspection runs when required, and packaging holds up through both domestic and export shipping. Orders reach buyers across India and overseas through the same raw-material-to-finished-product process we run across our round bar, hex bar, and fitting lines.
A martensitic grade with roughly 12% chromium and added nickel, giving better toughness than basic 410-type steel at similar hardness.
High strength, tunable hardness through heat treatment, moderate corrosion resistance, and solid wear performance once tempered correctly.
Yes. Quenching and tempering set the hardness-toughness balance, and different tempering temperatures shift that balance on the same plate.
Shafts, valve and pump parts, machinery components, and tooling applications where strength and hardness matter more than chemical resistance.
SS 415 is martensitic and hardenable by heat treatment. SS 304 is austenitic, non-hardenable, and chosen mainly for corrosion resistance.
Stock sizes cover common dimensions, and custom sizes or thicknesses can be arranged against drawings, with cutting on request.
Contact Panchdeep Metal Corporation to confirm current SS 415 plate stock and place your order.