| Spring Steel Strips (C67S SAE 1070) | Roll-up doors, industrial machinery | - SAE 1070 spring steel (Tensile Strength: 1800 MPa▲ per ASTM A370) - ±10% tolerance (ISO 2768-mk) - Oiled surface (ASTM B117 720hr salt spray resistance▲) | ▲ High resilience for repeated bending Corrosion resistance in moderate environments Precision tolerance for tight assemblies | Heavier than aluminum Higher cost than standard carbon steel |
| Galvanized Steel Strips | Outdoor enclosures, corrosive environments | - Zinc-coated (ASTM A153, 1000hr salt spray resistance) - ±15% tolerance (ISO 2768-coarse) | Excellent corrosion protection in harsh conditions Cheaper than stainless steel | Lower tensile strength (~500 MPa) for dynamic applications Heavier than uncoated steel |
| Stainless Steel Strips | Food processing, medical equipment | - 304/316 stainless steel (2000hr+ corrosion resistance▲) - ±8% tolerance (ISO 2768-mk) | ▲ Superior corrosion resistance in acidic/chemical environments Hygienic surface | High cost Lower flexibility compared to spring steel |
| Standard Carbon Steel Strips | General construction, low-stress parts | - Mild steel (~400 MPa tensile strength) - ±15% tolerance (ISO 2768-coarse) - Uncoated | Lowest cost option Easy to weld/cut | No corrosion protection (rusts in 24hr moisture exposure) Brittle under repeated stress |
| Aluminum Alloy Strips | Lightweight machinery, automotive parts | - 6061-T6 aluminum (248 MPa tensile strength▲, 1/3 weight of steel▲) - Anodized finish (ASTM B209 Type II) | ▲ Lightweight for easy handling Good corrosion resistance without coating | Lower load-bearing capacity Costlier than carbon steel |
| Coated Steel Strips (Polyester) | HVAC systems, electrical enclosures | - Polyester powder coating (ASTM D3359 Class 0 adhesion) - ±12% tolerance (ISO 2768-fine) - Flame retardant (UL 94 V-0) | ▲ Chemical-resistant finish (resists oils/UV exposure▲) Fire safety compliance | Surface coating may degrade under extreme heat Less durable than galvanized coatings |