SS400 black annealed cold-rolled full-hard steel coil is made of JIS G3101 standard SS400 material, which is kept in full hard state (not annealed and softened) after cold rolling process. The surface retains a uniform black oxide film (not pickled), with good strength and economy, and is widely used in general structural fields such as construction and machinery.
SS400 Black Annealed CRFH Coil chemical composition
|
Element |
C |
Si |
Mn |
P |
S |
|
Content |
≤0.22% |
≤0.35% |
≤1.40% |
≤0.050% |
≤0.050% |
SS400 Black Annealed Cold Rolled Steel Full hard Coil Mechanical properties
|
Performance indicators |
Numerical range |
Application advantages |
|
Tensile strength (MPa) |
400 - 510 |
High load-bearing capacity, suitable for heavy-loaded structural parts |
|
Yield strength (MPa) |
≥245 |
Ensure structural stability and prevent plastic deformation |
|
Elongation (%) |
≥21 |
A certain toughness, not easy to break during processing |
|
Hardness (HRB) |
Higher (full hardness) |
Strong wear resistance, extending the service life of parts |
SS400 Full Hard CRBA Coil Advantages
High strength and full hardness: Full hardness gives high hardness and wear resistance, black annealing treatment optimizes internal stress, balances strength and toughness
Excellent surface quality: Cold rolling process ensures smooth and clean surface, black oxide film has both rust prevention and decorative effects
Precise size control: small thickness tolerance, straight plate shape, meeting high-precision processing requirements
Wide application: Suitable for a variety of processing technologies (stamping, welding, bending), covering the needs of multiple industries
SS400 Full hard Cold Rolled Black Annealed Steel Coil Applications
🔹 Building structures:
Lightweight steel beams and columns
Temporary building frames
Scaffolding connectors
🔹 Machinery manufacturing:
Equipment rack baseplates
Conveyor belt brackets
Storage shelf components
🔹 Transportation:
Truck body frames
Container accessories
Engineering vehicle protective plates
🔹 General hardware:
Metal tool boxes
Industrial shelf shelves
Heavy-duty bracket connectors
Material comparison
|
Features |
SS400 Full Hard Coil |
Q235B Full Hard Coil |
SPHC Hot Rolled Coil |
|
Tensile strength |
510-610MPa |
550-700MPa |
370-500MPa |
|
Price |
Economical |
Moderate |
Lowest |
|
Surface quality |
Good |
Good |
Normal (with oxide skin) |
Packaging
Standard packaging:
Steel strapping + anti-rust paper
PE protective cover added to the core
Special packaging:
Export-grade waterproof packaging (extra charge)
Splitting service (minimum slitting width 300mm)
Hot Tags: ss400 full hard crba coil, China ss400 full hard crba coil manufacturers, suppliers, factory, Cold Rolled Stainless Steel Coil Roll, cold rolled crc coil, Stainless Steel Coil, 304 Stainless Steel Coil, cold rolled coil dc01, 201 cold rolled stainless steel coil
