No.1 & 2B Mill Finishes
No.1 hot-rolled annealed & pickled (HRAP) for heavy industrial plates; 2B smooth cold-rolled skin-passed finish for general fabrication.
100% EN 10204 3.1 TRACEABILITY
METALLURGICAL & DIMENSIONAL STANDARDS
Quality Assurance & Technical Specifications
Every stainless steel coil, sheet, plate, pipe, and bar supplied by Skailand Group conforms strictly to ASTM, ASME, EN, DIN, and BIS standards with verified chemical and mechanical certification.
MULTI-STAGE TESTING PROTOCOL
4-Point Quality Verification Before Dispatch
XRF PMI Spectro Verification
100% Positive Material Identification on every heat batch to confirm exact Cr, Ni, Mo, and Ti alloy percentages prior to dispatch.
UT, Eddy Current & Hydro Testing
Non-destructive weld seam testing, hydrostatic pressure testing, and ultrasonic core inspection for zero internal lamination.
Original EN 10204 3.1 MTC
Full heat-number traceability linking physical stencil markings on your material directly to the primary steel mill test certificate.
ASTM A240 / A312 / A554 / A276
Chemical Composition & Mechanical Property Charts
All values below represent standard ASTM / ASME specification limits verified on our Mill Test Certificates.
UNS S30400 / S30403 • EN 1.4301 / 1.4307
AISI 304 / 304L Chemical & Mechanical Specs
Standard 18/8 austenitic stainless steel and low-carbon 304L variant preventing sensitization during multi-pass heavy welding.
- Chromium (Cr): 18.00% – 20.00% | Nickel (Ni): 8.00% – 12.00%
- Carbon (C): ≤ 0.08% (304) / ≤ 0.030% (304L)
- Manganese (Mn): ≤ 2.00% | Silicon (Si): ≤ 0.75%
- Tensile Strength: ≥ 515 MPa (304) / ≥ 485 MPa (304L)
- Yield Strength (0.2%): ≥ 205 MPa | Elongation: ≥ 40%
- Max Hardness: ≤ 201 HBW / 92 HRB
UNS S31600 / S31603 • EN 1.4401 / 1.4404
AISI 316 / 316L Chemical & Mechanical Specs
Molybdenum-bearing austenitic grade engineered for aggressive chloride, acidic, marine, and pharmaceutical API environments.
- Chromium (Cr): 16.00% – 18.00% | Nickel (Ni): 10.00% – 14.00%
- Molybdenum (Mo): 2.00% – 3.00% (Pitting Resistance)
- Carbon (C): ≤ 0.08% (316) / ≤ 0.030% (316L)
- Tensile Strength: ≥ 515 MPa (316) / ≥ 485 MPa (316L)
- Yield Strength (0.2%): ≥ 205 MPa | Elongation: ≥ 40%
- Max Hardness: ≤ 217 HBW / 95 HRB
UNS S20200 • JSL J4 / J1 • IS 15997
AISI 202 / J4 Commercial Austenitic Specs
High-strength Cr-Mn-Ni austenitic grade widely utilized in architectural tubing, commercial catering equipment, and indoor structures.
- Chromium (Cr): 16.00% – 18.00% | Nickel (Ni): 1.00% – 4.00%
- Manganese (Mn): 7.50% – 10.00% | Nitrogen (N): ≤ 0.25%
- Carbon (C): ≤ 0.12% | Copper (Cu): 1.50% – 2.20% (J4)
- Tensile Strength: ≥ 655 MPa | Yield Strength: ≥ 310 MPa
- Elongation (50 mm): ≥ 40% | Deep-Draw Capable
- Max Hardness: ≤ 241 HBW / 100 HRB
UNS S43000 / S40900 / S31008 / S31803
AISI 430 / 409L / 310S & Duplex 2205 Specs
Ferritic appliance grades (430/409L), high-temperature furnace austenitic (310S), and high-yield Duplex 2205 (UNS S31803).
- AISI 430: 16–18% Cr, ≤0.12% C | Tensile ≥ 450 MPa
- AISI 409L: 10.5–11.7% Cr, Ti-Stabilized | Weldable Ferritic
- AISI 310S: 24–26% Cr, 19–22% Ni | Service up to 1150°C
- Duplex 2205: 22% Cr, 5.5% Ni, 3% Mo, 0.18% N
- Duplex 2205 Yield: ≥ 450 MPa | Tensile: ≥ 620 MPa
- PREN Pitting Index (2205): ≥ 34.0
SURFACE FINISH STANDARDS
Available Mill & Polished Surface Finishes
No.4 Satin & Hairline PVC
180–240 grit unidirectional satin brushed finish (Ra 0.2–0.5 µm) laminated with 70–100µm fiber-laser protective PVC film.
BA, #8 Super Mirror & PVD
Bright Annealed (BA), optical #8 non-directional super mirror, and vacuum titanium PVD Gold, Rose Gold, Champagne & Black.