Stainless Steel Medium-Thick Plates
Stainless steel plate are metal sheets composed of chromium, nickel, and other alloying elements, with a thickness range of 4.0–25.0mm (25.0–100.0mm is considered thick plate, and over 100.0mm is super-thick plate). The product is categorized into austenitic, ferritic, duplex, martensitic, and precipitation-hardening types, widely used in chemical, energy, construction, and mechanical engineering industries.
Key Features
Standards:
ASTM/ASME: A240/A240M, A480/A480M
EN: 10088-2, 10095 (for heat-resistant grades)
JIS: G4304, G4305
GB: GB/T 4237, GB/T 24511
Optional compliance with NACE MR0175/ISO 15156 for sour service environments.
Materials:
Austenitic Stainless Steels:
ASTM/ASME: 304/304L, 316/316L, 321, 347, 310S, 904L
EN: 1.4301 (X5CrNi18-10), 1.4307 (X2CrNi18-9), 1.4401 (X5CrNiMo17-12-2), 1.4404 (X2CrNiMo17-12-2)
JIS: SUS 304, SUS 316, SUS 321
GB: 06Cr19Ni10 (304), 022Cr17Ni12Mo2 (316L)
Ferritic Stainless Steels:
ASTM: 430, 439, 444
EN: 1.4016, 1.4510, 1.4521
Duplex & Super Duplex Stainless Steels:
ASTM: 2205 (S31803/S32205), 2507 (S32750)
EN: 1.4462, 1.4410
Ideal for offshore, chemical, and marine applications requiring high strength and chloride resistance.
Martensitic & Precipitation Hardening:
ASTM: 410, 420, 17-4PH (S17400)
EN: 1.4021, 1.4542
Dimensions:
Hot-Rolled Medium-Thick Plates: Thickness 3.0–150mm, Width 1000–3500mm, Length customized.
Surface Finishes:
No.1: Hot-rolled, annealed, and pickled (standard for heavy plates)
2B: Cold-rolled, annealed, pickled, and skin-passed (smoother finish)
BA (Bright Annealed): Reflective finish
No.4: Brushed/satin finish (common for architectural use)
Custom: Sandblasted, polished (e.g., 180–600 grit), or coated upon request.
Heat Treatment:
Solution Annealing (standard for austenitic grades)
Annealing, Quenching & Tempering (for martensitic and precipitation hardening grades)
Duplex grades: Solution annealed and rapidly cooled to ensure phase balance.
Testing & Inspection:
Ultrasonic Testing (UT): Per ASTM A435, A578, or EN 10160 (optional or required)
Intergranular Corrosion Test (IGC): Per ASTM A262 (for 304L, 316L, etc.)
Ferrite Content Measurement: For duplex and austenitic weldability control
PMI (Positive Material Identification): Handheld XRF for grade verification
Applications:
Industrial Equipment: Pressure vessels (reactors, storage tanks), chemical pipelines, boiler linings.
Architectural Decoration: Curtain walls, railings, roofs, stair handrails.
Automotive/Marine: Exhaust systems, hull structures, seawater desalination equipment.
Food/Medical: Food processing equipment, medical devices (sterile environment requirements).
Certifications:
Classification Society Certifications: ABS, BV, DNV, LR, NK, CCS (meet requirements for offshore platforms and shipbuilding).
Owner/Engineering Firm Certifications: ISO 9001, API Q1, ASME SA240, GB/T 222.
Common Customer Questions (Q&A Format)
Q: What is the lead time for stainless steel medium-thick plates?
A: Typically 20–60 days, depending on order volume and production schedule.
Q: Do you support non-standard dimensions or special coatings?
A: Yes, we offer customized sizes (e.g., rectangular sheets, special thicknesses) and coatings (e.g., epoxy resin, 3PE anti-corrosion layers).
Q: How is product quality ensured?
A: Third-party inspection reports (e.g., SGS, TUV) and full lifecycle traceability are provided to guarantee compliance with ASTM, GB/T, etc.
Q: What shipping methods are available? Is global delivery supported?
A: Options include sea, land, or air freight. We support containerized or bulk shipping to major global ports.
Q: Is 304L suitable for low-temperature environments?
A: Yes, 304L exhibits excellent low-temperature performance and intergranular corrosion resistance between -196°C and 800°C.
Q: What advantages does duplex stainless steel (e.g., 2205) offer over austenitic stainless steel?
A: 2205 combines the corrosion resistance of austenitic steel with the high strength of ferritic steel, ideal for high-stress corrosion environments (e.g., marine engineering).
Q: What should be considered when welding stainless steel medium-thick plates?
A: Control interpass temperature (to avoid cold cracks), use matching filler materials (e.g., 308L weld wire), and perform solution annealing to relieve stress.
Q: What is MOQ
A: 1pcs or 5 tons for normal steel grade , special steel grade is to be negotiated.
Hot Tags: stainless steel plate, China stainless steel plate manufacturers, suppliers, factory, alloy steel plate, Carbon Steel Sheet Plate, high carbon steel plate, hot rolled stainless steel coil, Hot Rolled Stainless Steel Sheets, Stainless Steel Plate
