Martensitic Stainless Steel Sheet and Plate in 410 / 420 / 420J2 / 431 / 440C Grades with 0.5 – 80 mm Thickness and ASTM A240/A480 Standard
Product Details
| Grade: | 410/1.4006，420/S42000，420J2/1.4028，431/1.4057 | Standard: | ASTM A240/A480, EN 10088-2, GB/T 3280, JIS G4305 |
|---|---|---|---|
| Width: | 1,000 – 2,500 Mm (up To 3,000 Mm On Request) | Thickness: | 0.5 – 80 Mm (custom) |
| Length: | 2,000 – 12,000 Mm (custom Cut) | Finish: | No.1 (hot-rolled Annealed) / No.4 (brushed) / 2B (cold-rolled Bright) / Ground / Pickled |
| Highlight |
410 / 420 / 420J2 / 431 / 440C grades Martensitic Stainless Steel Sheet,0.5 – 80 mm thickness Martensitic Stainless Steel Plate,ASTM A240/A480 standard Martensitic Stainless Steel Coil |
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Product Description
- Main martensitic grades: 410(1.4006), 420(S42000/1.4021), 420J2(1.4028), 431(1.4057), 440C; meets ASTM A240/A480, EN 10088-2, GB/T 3280, JIS G4305 global standards
- Full dimensional specifications: Thickness 0.5–80mm, width 1000–2500mm (custom max 3000mm), length 2000–12000mm with free cut-to-length service
- Multiple industrial surface finishes: No.1 hot rolled pickled, 2B cold rolled bright, No.4 brushed, ground, pickled customized surfaces
- High-carbon chromium martensitic alloy, excellent hardenability after heat treatment, ultra-high hardness & wear resistance after quenching
- Original TISCO & BG mill raw materials, ISO9001 full batch inspection certificates provided for export customs clearance
- Strict pre-shipment testing: Spectral chemical analysis, tensile & hardness mechanical test, flatness & dimensional visual inspection
- Stable production cycle, standard delivery within 10–30 working days after advance payment received
- Standard export pallet packaging with waterproof anti-scratch film to avoid rust, scratch and collision during long ocean transport
Martensitic stainless steel sheet is high-carbon chromium iron alloy with typical hardening performance through quenching heat treatment. Different from austenitic & ferritic stainless steel, it can reach high Rockwell hardness after tempering, featuring outstanding wear resistance and moderate atmospheric corrosion resistance at low cost.
Our core martensitic product series covers general structural 410, medium-hardness cutting tool grade 420/420J2, high-toughness corrosion-resistant 431, ultra-high hardness wear-resistant 440C. We supply thin cold rolled decorative sheets and thick hot rolled industrial plates, supporting laser cutting, stamping, CNC machining and custom heat treatment service per customer drawings.
This material is widely used for cutting blades, bearing parts, mechanical wear components, valve parts and general anti-rust structural components without strong chloride medium exposure.
Low-carbon martensitic base grade, minimum chromium 11.5%, good ductility in annealed state, moderate hardness after heat treatment, basic atmospheric rust resistance, low cost for general mechanical structural parts, valve bodies and pump components.
Medium carbon martensitic steel with higher carbon content than 410, obvious hardening capacity after quenching; 420J2 has optimized carbon ratio for better polishing performance, widely used for kitchen cutlery, surgical instruments, mold inserts and cutting blades.
Nickel-containing martensitic grade, improved toughness & corrosion resistance compared to 420, reduces cracking risk after heat treatment, suitable for high-strength shaft parts, marine valve fittings and pressure-resistant mechanical components.
Ultra-high carbon martensitic stainless steel, highest hardness among standard stainless steel grades after quenching, superior wear resistance, used for precision bearings, measuring tools, high-strength cutting tools and wear-resistant mechanical liners.
| Grade | C Max | Si Max | Mn Max | P Max | S Max | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| 410 (1.4006) | 0.15 | 1.00 | 1.00 | 0.040 | 0.030 | 11.5–13.5 | ≤0.75 | — |
| 420 (1.4021) | 0.30–0.40 | 1.00 | 1.00 | 0.040 | 0.030 | 12.0–14.0 | ≤0.75 | — |
| 420J2 (1.4028) | 0.26–0.36 | 1.00 | 1.00 | 0.040 | 0.030 | 12.0–14.0 | ≤0.75 | — |
| 431 (1.4057) | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | 15.0–17.0 | 1.25–2.50 | — |
| 440C | 0.95–1.20 | 1.00 | 1.00 | 0.040 | 0.030 | 16.0–18.0 | ≤0.75 | 0.40–0.70 |
- Excellent Heat Treatment Hardening Performance: Adjustable hardness via quenching & tempering; 440C can reach over 58HRC for extreme wear-resistant components.
- Outstanding Wear Resistance: High chromium & carbon matrix provides superior abrasion performance, ideal for cutting tools, bearings and friction parts.
- Cost-Effective Anti-Rust Material: Lower nickel content than austenitic steel, economical for dry atmospheric anti-rust mechanical equipment.
- Multiple Surface Finishes: Hot rolled No.1 thick plate, cold rolled 2B bright sheet, No.4 brushed & ground finish for tool and decorative usage.
- Complete Custom Machining Support: Support cutting, bending, stamping, CNC grinding and customized heat treatment per engineering drawings.
- Strict Full Batch Quality Control: All raw materials & finished sheets pass spectrometer, mechanical and non-destructive inspection before delivery.
- 410: General mechanical structural plates, pump & valve housings, boiler internal components, low-load anti-rust hardware parts
- 420 / 420J2: Kitchen cutlery, medical surgical instruments, plastic mold inserts, industrial cutting blades, bearing bushings
- 431: High-strength mechanical shafts, marine valve parts, oil equipment components, high-toughness wear-resistant liners
- 440C: Precision bearings, measuring gauges, high-hardness cutting tools, food machinery wear parts, high-performance mold inserts
We provide integrated forging and precision machining services, and can produce finished components strictly according to customer drawings:
- Turning, milling, planing, drilling, boring, grinding
- Gear cutting, CNC precision machining
- Sizing cutting, surface treatment and finishing
We have supplied a wide range of forged and machined parts including shafts, cylinders, hollow bars, pistons, tube sheets, rings and disc bearings to customers worldwide.
We have a professional QC inspection team and complete testing equipment to ensure stable and reliable product quality:
- Ultrasonic testing (UT) for internal defects
- Tensile and hardness testing for mechanical properties
- High-precision dimensional measurement
- Spectrometer for chemical composition verification
- Metallographic microstructure inspection
Every batch of products undergoes strict inspection before delivery to meet the quality requirements of various engineering projects.
- Inner packaging: waterproof polybag + anti-scratch protective film for moisture and dust protection
- Outer packaging: reinforced wooden case / wooden pallet, suitable for long-distance international transportation
- Custom packaging solutions available upon request
- Normally 10 – 45 days after receipt of advance payment
- Exact delivery time depends on order quantity, specification complexity and machining requirements
- Standard martensitic sheet stock lead time: 10–30 working days
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