X6Cr13 (EN 1.4000 / UNS S41008 / JIS SUS410S), designated AISI 410S or Type 403, is a low-carbon (C ≤ 0.08%) chromium stainless steel with 12.0–14.0% Cr. By suppressing carbon below the hardenability threshold of standard 410, this grade remains soft and ductile even after rapid cooling from above the critical temperature — a deliberate design feature that eliminates quench-cracking risk during welding and high-temperature exposure. The microstructure is fully ferritic in the annealed condition, delivering consistent magnetism, good formability, and adequate corrosion resistance in atmospheric, fresh-water, and mildly acidic environments. At FUSHUN METAL, X6Cr13 / 1.4000 is sourced and stocked under an ISO 9001 and AS9120B certified quality system — every heat is verified against EN 10088-2 by optical emission spectrometry (OES) with full traceability to EN 10204 Type 3.1 mill certificates.
Equivalent Grades of X6Cr13 / S41008 Across International Standards
| Standard Body | Designation |
|---|---|
| EN (Europe) | X6Cr13 / 1.4000 |
| ASTM (USA) | AISI 410S / Type 403 / UNS S41008 |
| JIS (Japan) | SUS410S |
| GB (China) | 06Cr13 / 0Cr13 (S41008 / S11306) |
| DIN (Germany) | X6Cr13 / X7Cr14 / 1.4000 |
| AFNOR (France) | Z6C13 |
| BS (UK) | 403S17 |
| ISO | X6Cr13 / 4000-410-08-I |
| GOST (Russia) | 08KH13 / 08Х13 |
| SS (Sweden) | 2301 |
| KS (Korea) | STS410S |
FUSHUN METAL supplies X6Cr13 / 1.4000 certified to EN 10088-3, ASTM A240/A276, and JIS G 4303 — each shipment accompanied by EN 10204 3.1 mill test reports.
FUSHUN METAL
Industrial Applications of X6Cr13 / S41008
Petroleum Refining
Fractionating tower trays, bubble caps, distillation columns, heat exchanger shells, valve bodies, quench-rack frames — resistant to hot sulfur-bearing crude fractions.
Thermal Processing
Annealing boxes, furnace partitions, burner components (lower-temperature zones), heat-treat baskets, conveyor belts in continuous ovens.
Chemical Equipment
Ammonium carbonate mother-liquor vessel linings, water-steam service piping, mild-acid storage tanks, pressure vessel internals for non-chloride media.
Mining & Ore Processing
Slurry chute liners, screen frames, cyclone bodies, structural supports for mineral beneficiation — good abrasion-corrosion balance at moderate cost.
Construction & Architecture
Elevator interior panels, escalator cladding, structural brackets, door frames, handrails, decorative trim — polishable surface with adequate indoor corrosion resistance.
Food & Consumer Goods
Kitchenware, sanitary-ware fittings, cutlery blanks, washing machine drums, refrigeration panels — suitable where 304-grade cost is prohibitive and chloride exposure is low.
FUSHUN METAL serves these industries with full-traceability X6Cr13 / 1.4000 material — ISO 9001 & AS9120B certified, EN 10204 3.1 documentation, optional third-party inspection on request.
Supply Range — X6Cr13 / 1.4000 at FUSHUN METAL
Hot-Rolled Round Bar
Diameter: 10–800 mm
Length: 2,000–12,000 mm
Surface: Black / Peeled / Ground
Standard: EN 10088-3, ASTM A276
Hot-Rolled Flat Bar
Thickness: 3–120 mm
Width: 20–800 mm
Length: 2,000–6,000 mm
Edge: Sheared / Sawn
Forged Round Bar
Diameter: 100–1,200 mm
Length: 1,000–8,000 mm
Process: Open-die forged
UT tested per EN 10228-3
Forged Flat / Block
Thickness: 30–600 mm
Width: 100–1,500 mm
Max single pc: ~8,000 kg
Grain refinement per ASTM E112
Additional forms: cold-rolled sheet/coil (0.3–6.0 mm), welded tube (OD 6–610 mm), bright-drawn bar (h9/h11 tolerance), and wire rod (ø5.5–20 mm). FUSHUN METAL maintains buffer stock of X6Cr13 / 1.4000 in standard sizes for rapid dispatch — all products under ISO 9001 & AS9120B quality assurance.
Chemical Composition of X6Cr13 per EN 10088-2
| C | Si | Mn | P | S | Cr | Ni | Fe |
|---|---|---|---|---|---|---|---|
| ≤ 0.080 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030* | 12.0–14.0 | ≤ 0.75 | Balance |
All values in weight %. *For bright products, sulfur is controlled to ≤ 0.015%; for improved machinability, 0.015–0.030% is typical. At FUSHUN METAL, every incoming heat is verified by OES spectrometry for full chemistry — carbon and sulfur are cross-checked by LECO combustion analysis. Each delivery carries an EN 10204 Type 3.1 certificate signed by our ISO 9001 / AS9120B authorized quality representative, with full traceability from melt to dispatch.
Mechanical Properties of X6Cr13 in Annealed Condition (+A)
| Property | Value | Standard / Condition |
|---|---|---|
| Tensile Strength, Rm | 400 – 630 MPa | EN 10088-3, +A, bar d ≤ 25 mm |
| Yield Strength, Rp0.2 | ≥ 230 MPa | EN 10088-3, +A, longitudinal |
| Elongation A | ≥ 20% | EN 10088-3, proportional gauge |
| Hardness | ≤ 200 HBW / ≤ 90 HRB | EN 10088-3 / EN ISO 6506 |
| Density | ~7.70 g/cm³ | Physical; magnetic (ferritic) |
| Thermal Conductivity | ~30 W/(m·K) at 20°C | EN 10088-1 reference |
| Modulus of Elasticity | ~220 GPa at 20°C | EN 10088-1 |
| Service Temperature | ≤ 500°C continuous | Oxidizing atmosphere; avoid ≥ 1100°C |
Annealing is performed at 750–810°C (or 815–900°C per ASTM practice) followed by air cooling — the low carbon content renders this grade non-hardenable by quench-and-temper. Stress relieving at 600–750°C is recommended after heavy cold work or welding. FUSHUN METAL verifies tensile properties per heat on a universal testing machine calibrated to ISO 7500-1, with Brinell hardness checked on every bar end. For forged products, ultrasonic testing per EN 10228-3 is available upon request to confirm internal integrity.
Frequently Asked Questions — X6Cr13 / 1.4000
What is the difference between 410 and 410S (X6Cr13)?
The critical distinction is carbon content. Standard 410 (C ≤ 0.15%) is a hardenable martensitic grade that can be quench-and-tempered to high strength. 410S / X6Cr13 (C ≤ 0.08%) deliberately limits carbon below the hardenability threshold, preventing austenite formation at high temperature. Result: 410S remains soft and ductile even after rapid cooling, eliminating quench-cracking risk during welding. Corrosion resistance is comparable between the two — 410S is the choice when weldability and consistent annealed properties matter more than achievable hardness.
Can X6Cr13 / 1.4000 be welded? What filler is recommended?
Yes — the low carbon content makes X6Cr13 significantly more weldable than standard martensitic 410. Use TIG or MIG with ER410 / ER410NiMo filler wire. Pre-heat to 150–200°C and control interpass temperature to minimize hard-zone formation. Post-weld stress relief at 600–750°C restores ductility in the heat-affected zone (HAZ). FUSHUN METAL can supply matching ER410 filler wire alongside base material orders for a fully compatible welding package.
Is X6Cr13 magnetic? How does it compare to 304?
Yes — X6Cr13 is ferritic in the annealed condition and remains magnetic under all service states. Compared to 304: X6Cr13 has lower chromium (12–14% vs 18–20%) and no intentional nickel, making it roughly 30–40% less expensive in raw material cost. Corrosion resistance is adequate for atmospheric, fresh-water, and mild chemical exposure but insufficient for chloride-rich or marine environments where 304 excels. X6Cr13 also offers higher thermal conductivity (~30 vs ~15 W/m·K), making it more efficient in heat-transfer applications.
How does FUSHUN METAL ensure X6Cr13 / 1.4000 quality?
Every FUSHUN METAL heat of X6Cr13 passes through a four-stage verification protocol: (1) raw material screening by OES with carbon/sulfur confirmation via LECO combustion; (2) in-process dimensional checks during rolling or forging; (3) post-annealing mechanical testing — tensile per ISO 6892-1 and hardness per EN ISO 6506 on each bar end; (4) final visual/dimensional inspection and mark-stamping before dispatch. The complete chain operates under ISO 9001 and AS9120B certification, with every kilogram traceable to its originating mill certificate.
Can X6Cr13 be polished? Is it suitable for decorative use?
Yes — X6Cr13 / 1.4000 accepts standard mechanical polishing to bright (#4, #6, #8) finishes. It is widely used in elevator panels, escalator cladding, and indoor architectural trim. However, unlike 304, it may develop light surface staining under prolonged outdoor humidity or chloride exposure. For interior decorative applications where cost is a key driver, X6Cr13 offers an excellent polished aesthetic at significantly lower raw material cost.
