5.0mm 420J2 Hot-Rolled Stainless Steel Coils Today's Price
Oct 21, 2026
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If you are sourcing martensitic stainless steel for the production of tool blanks, industrial blades, plastic mold bases, valve components, or wear-resistant mechanical parts, 5.0mm-thick 420J2 hot-rolled coils serve as a common base material for subsequent heat treatment.
Many procurement teams focus solely on the current price per kilogram, overlooking critical technical specifications-such as the annealing condition, control of surface scale, internal segregation, sheet flatness, and the material's ability to achieve the target HRC hardness after quenching. Low-cost, substandard 420J2 hot-rolled coils often lead to inconsistent hardness and cracking during heat treatment, resulting in significant losses due to scrap.
What is 5.0mm 420J2 Hot-Rolled Stainless Steel Coil?
420J2 (SUS420J2, EN 1.4028 / X30Cr13, UNS S42000) is martensitic hardenable stainless steel, with chemical range C:0.26–0.35%, Cr:12.0–14.0%, Ni ≤0.6%, almost no nickel content. **5.0mm hot rolled coil** is produced above recrystallization temperature, normally supplied in annealed & descaled condition. Compared with cold rolled 420J2, hot rolled material has thicker gauge range, lower processing cost and is the preferred raw substrate for subsequent cutting, machining, forging and heat treatment.
420J2 Hot Rolled Coil Price per kg, 5.0 mM, EXW China
Currently, the prevailing international market price range for 5.0mm 420J2 stainless steel hot-rolled coils is approximately $1,000 to $2,500 per metric ton (equivalent to about $1.00–$2.50 per kilogram). 420J2 is a martensitic, high-carbon stainless steel frequently used for cutlery, wear-resistant industrial structural components, and mechanical manufacturing. A thickness of 5.0mm is considered relatively substantial, and such material is typically produced via a hot-rolling process (resulting in a "No. 1" surface finish).
| Thickness | Width | Surface | MOQ | Reference Price (USD/kg) | Remarks |
|---|---|---|---|---|---|
| 5.0 mm | 1000 mm | Hot rolled black / descaled | 1000 kg | 1.42 – 1.55 | Standard stock width |
| 5.0 mm | 1219 mm (4ft) | Hot rolled descaled | 1000 kg | 1.46 – 1.60 | Most popular for slitting |
| 5.0 mm | 1500 mm (5ft) | Hot rolled descaled | 2000 kg | 1.51 – 1.66 | Wide width premium |
| 5.0 mm | Custom slit width | Descaled | 500 kg | 1.56 – 1.72 | Burr-free slit edge |
| 5.0 mm | 1000–1219 mm | Pickled bright HR | 1500 kg | 1.53 – 1.68 | Lower scale for direct machining |
Disclaimer: All prices are for budget reference only. Final quotation changes with chrome scrap price, alloy surcharge, exchange rate, coil width, surface condition, edge type, order tonnage, PMI / third-party inspection and delivery terms. Base condition: annealed, descaled, regular mill edge, MTC EN 10204 3.1 available, export seaworthy packing
If you'd like a more exact quote, please let me know:
If you require a formal quotation, sample testing, slitting services, or guidance on heat treatment for the production of cutting tools, molds, or valve components, please let us know your required width, surface condition, order weight, and port of destination.
420J2 vs. 420J1 vs. 440C: Price and Cost
| Grade | Type | Cr (%) | C (%) | Magnetic | Hardenable | Main Advantage | Relative Price vs 420J2 |
|---|---|---|---|---|---|---|---|
| 420J2 | Martensitic | 12–14 | 0.26–0.35 | Yes | Yes | Balanced hardness & wear resistance | Baseline (100%) |
| 420J1 | Martensitic | 12–14 | 0.16–0.25 | Yes | Yes | Better toughness, lower max hardness | -5% ~ -10% |
| 410 | Martensitic | 11.5–13.5 | ≤0.15 | Yes | Yes | Easy forming, low hardness | -12% ~ -18% |
| 430 | Ferritic | 16–18 | ≤0.12 | Yes | No | Good formability & polishing | -18% ~ -25% |
| 440C | Martensitic | 16–18 | 0.95–1.20 | Yes | Yes | Ultra-high hardness | +35% ~ +45% |
arket Price Analysis for Stainless Buyers
Since 420J2 contains nearly zero nickel, its price trend is mainly driven by ferrochrome, chrome ore, carbon steel base price and hot rolling mill processing cost, rather than LME nickel. This is a huge difference from 304 / 316L austenitic coils. Key factors affecting your final unit cost:
Chrome alloy surcharge: every fluctuation of high-carbon ferrochrome directly moves 420J2 coil price.
Surface treatment: simple black hot rolled surface is cheapest; pickling & descaling adds processing cost.
Slitting requirement: martensitic stainless has higher edge cracking risk during slitting, so slit edge service carries extra charges.
Order volume: orders ≥5 MT normally get 4–7% bulk discount vs small spot batches.
Inspection: PMI, hardness test, metallurgy inspection or SGS witness inspection increases unit price and lead time.
Stock availability: 1000 mm and 1219 mm 5.0 mm 420J2 HR coils are common spot stock; 1500 mm wide coils usually need production scheduling.
Supplier of 420J2 Hot-Rolled Coils
With over 18 years of experience in manufacturing and exporting, GNEE has supplied stainless steel and special alloy materials to more than 60 countries worldwide. We hold comprehensive ISO, SGS, and BV certifications and have successfully delivered over 100 industrial projects within the energy and metal processing sectors. To address your procurement requirements for 5.0mm 420J2 hot-rolled coils, we offer the following:
- **Authentic 420J2 Hot-Rolled Coils:** Each shipment includes a full 3.1 Material Test Certificate (MTC) with heat-number traceability. Positive Material Identification (PMI) testing is also available upon request.
- **Extensive In-Stock Inventory:** We maintain a ready supply of 420J2 hot-rolled coils in thicknesses ranging from 4.0mm to 8.0mm to meet your urgent production needs.
- **Value-Added Processing:** Services include slitting, cut-to-length, edge trimming, surface inspection, and customized, sea-worthy packaging.
- **Flexible Cooperation Models:** We support both small-scale trial orders and large-volume contracts, with pricing available under various trade terms, including EXW, FOB, CFR, and CIF.
- **Technical Support:** We provide guidance on heat treatment parameters and offer professional advice regarding material substitution between grades such as 420J1, 420J2, and 440C.
FAQ
Q: Can 5.0mm 420J2 hot-rolled coils be welded directly?
A: Direct welding is not recommended. As a martensitic steel, 420J2 has a high susceptibility to cracking. If welding is necessary, the material must be preheated to 200–300°C, followed by a tempering process after welding. For large welded components, we recommend using 304 or 316L austenitic stainless steel instead.
Q: What hardness can 420J2 achieve after heat treatment?
A: Through quenching and appropriate tempering, a stable hardness of HRC 52–56 can typically be achieved. The final hardness depends on factors such as heating temperature, holding time, and cooling rate. We can provide a heat treatment process recommendation for your production workshop to reference.
Q: Is 420J2 suitable for use in saltwater or coastal (salt-spray) environments?
A: No, it is not suitable. It offers only minimal resistance to atmospheric corrosion; in chloride-rich environments, it will rapidly develop rust and pitting. For marine applications, please select 316L or duplex stainless steel 2205.
Q: What is the lead time for 5.0mm 420J2 hot-rolled coils?
A: For in-stock items (1000mm/1219mm wide, descaled), the lead time is 3–7 business days. For orders requiring custom slitting, a width of 1500mm, or specific pickling requirements, the lead time is 14–22 business days.
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