Welcome to Jiangsu Lichao New Material Technology Co., Ltd.
What are the key points for selecting stainless steel coils
source：www.cnlichao.net | Release time：2026年05月07日1、 Material grade (selected according to environmental corrosion level, most importantly)
Weak corrosion (indoor/atmospheric/clean water): choose 304 (18Cr-8Ni, universal/food grade); Cost sensitive options include 201 (low nickel, moderate corrosion resistance) or 430 (ferrite, magnetic, decorative/home appliance).
Moderate corrosion (coastal/humid/food processing/chloride ion): choose 316L (containing Mo, resistant to seawater/acid and alkali); Select 321 (containing Ti, resistant to intergranular corrosion) for high temperature conditions.
Strong corrosion (chemical/desulfurization/salt spray/acid): Choose 2205/2507 duplex steel (high strength+high corrosion resistance) or 317L/904L (strong acid resistance).
High strength/wear-resistant (tool/spring/heavy load): Choose 301 (cold-rolled high strength) or 410/420 (martensitic, quenched and hardened).
2、 Rolling process and specifications (according to processing method and strength requirements)
1. Cold rolled coil (CR, 0.3-3.0mm, most commonly used)
Features: 2B/BA/HL surface, high precision (IT6-IT8), good smoothness.
Applicable: Home appliances, kitchenware, precision stamping, elevator panels, decorative parts.
Common thickness: 0.4/0.5/0.8/1.0/1.5/2.0mm; width: 1000/1219/1500mm.
2. Hot rolled coil (HR, 3.0-15mm)
Features: Surface, high strength, low cost.
Applicable: structural components, pressure vessels, thick plate welding, chemical storage tanks.
3、 Surface condition (according to appearance and hygiene requirements)
2B (Cold Rolled Matte): The most versatile, corrosion-resistant, and easy to process, used for kitchenware/home appliances/general decoration.
BA (Bright Mirror Surface): Bright as a mirror, used for decorative/home appliance panels.
HL (brushed): brushed texture, anti fingerprint, used for elevators/curtain walls/decorations.
8K (mirror polishing): High gloss, used for decoration/artwork.
4、 Mechanical performance (according to force and processing requirements)
Ordinary molding (bending/shallow punching): choose 304/316L, elongation ≥ 40%, easy to process.
Deep drawing (complex parts/pots): Choose 304DQ (deep drawing grade), low hardness, high elongation.
High strength (load-bearing/impact resistance): Choose 301 (cold-rolled high-strength) or duplex steel, with a tensile strength of ≥ 800MPa.
High temperature resistance (boiler/heat exchange): Choose 321/309S/310S, stable performance at 800 ℃.
5、 Dimensional accuracy and tolerance (according to machining accuracy requirements)
Precision stamping/product: thickness tolerance ± 0.03mm, width ± 0.5mm, in compliance with ASTM A480/GB/T 4237.
General industrial/structural components: thickness tolerance ± 0.1mm, width ± 1mm is sufficient.
6、 Cost and Life Balance (Economic Selection)
Short term/non critical components: Choose 201/430, low price is sufficient.
Medium to long term/key components: Choose 304, with good cost-effectiveness and a lifespan of over 10 years.
High corrosion/high-value equipment: Choose 316L/duplex steel, high one-time investment but maintenance free, with a lifespan of over 20 years.
7、 Quality verification (key points for pit prevention)
Material certification: Request the steel mill quality assurance certificate (MTC), verify the chemical composition (Cr/Ni/Mo), mechanical properties, and furnace batch number.
Surface inspection: no cracks, rust spots, color differences, scratches; There are no burrs on the edges.
Magnetic identification: 304/316L (austenitic) non-magnetic; 430 (ferrite)/420 (martensite) has magnetism (304 may have slight magnetism after cold processing, which is normal).
prev:
What are the effects of the surface type of stain…
next:
What is the dimensional accuracy of stainless ste…
【Related articles】
Jiangsu Lichao New Material Technology Co., Ltd.
+
WeChat ID:www.cnlichao.net
WeChat ID:www.cnlichao.net
Add WeChat
Contact us
The phone