Galvanized Plate Sheet Metal Plain Galvanized Steel Coil Galvanized Coated
Product Description
Product | Galvanized steel coil |
Grade | SGCC,SGHC,CGCC,DC51D DX51D DX52D DX53D DX54D SGH340 SGH400 SGH440 SGH490 SGH540 SGC340 SGC400 SGC440 SGC490 SGC570 |
Standard | ASTM A653,JIS G3321,GB/T2518 |
Raw material | SPHC,SPCC,SPCD,SPCE,DC01,DC11 S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD |
Technique | Cold rolled and Hot rolled |
Spangle | Zero spangle,Mini spangle,Regular spangle,Big spangle |
Surface treatment | chromed,skin pass,oiled,unoiled,slightly oiled,dry |
Zinc coating | 20-275g/m2 |
Width | 600mm-1250mm, according to customer' s requirement |
Thickness | 0.12mm-2.0mm |
Tolerance | (+/-) 0.01mm(thickness) |
Coil weight | 3-8MT or as you required |
Place of Origin | Shandong,China(Mainland) |
Certification | ISO9001:2008,SGS,TUV,MTC,CO |
Processing | Customer's requirement |
Characteristics
4140 Alloy Steel/SAE 4140 Steel Price is engineering steel supplied in quenched and tempered conditions. Very good machinability. High toughness. High creep strength. Repeated impact resistant capability.
Applications
4140 Alloy Steel/SAE 4140 Steel Price is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .
Chemical Composition
Surface condition
Black surface/ Grinded/ Machined
Hardness
Annealed HBS 217 max
Heat treatment
Forging Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc.
AnnealingHeat to 830°C-850°C.Cool in furnace.
NormalisingHeat to 870°C-900°C.Cool in still air.
Stress RelievingAnnealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air.
HardeningHeat to 830°C-880°C. Quench in oil or polymer.
TemperingHeat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided.