S45C black annealed cold rolled carbon steel coil
Black Annealed Cold Rolled Steel Coil is cold rolled steel coil goes to the heat treatment. The heat treatment process of recrystallizing cold-rolled coils, eliminating cold-rolling work hardening, and restoring plasticity to obtain the expected physical and physical-chemical properties. The process flow is generally divided into preliminary annealing, intermediate annealing and finish annealing. The annealing process varies with the purpose, and recrystallization annealing, incomplete annealing and complete annealing are often used. In order to obtain a strip with no oxidation and no decarburization on the surface, the strip is brightly annealed in a protective atmosphere.
Due to its wide applications and good machinability, it is a great investment project. DELONG Steel has its own factory to meet bulk orders timely. Also, we will offer a direct-sale wear resistant steel plate price to lower your cost. If you are interested, please contact us for details!
Specifications
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Product name
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black annealed cold rolled carbon steel coil/Spring steel strips
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Thickness
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1.5-25mm
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Width
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1250-2500mm (Or as custom's request) ( regular width 1000mm, 1250mm, 1500mm )
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Coil ID
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508mm or 610mm
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Coil weight
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3 - 8 ton or as client requirement
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Standard
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ASTM EN DIN GB ISO JIS BA ANSI
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Steel Grade
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Q235, Q345, ST37, Q195, Q215, A36, 45#, 16Mn, SPHC
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Technique
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hot rolled cold rolled (as custom's request)
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Surface treatment
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Bare/Shot Blasted and Spray Paint or as required.
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Application
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Used in home appliances construction, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc.
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Package
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Standard export package (Plastic film in the first layer, second layer is Kraft paper, third layer is galvanized sheet)
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Payment Terms
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T/T or L/C
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Delivery time
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Within 15 workdays after deposit received
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Remarks
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Insurance per to Contract terms;
MTC will be handed on with shipping documents; We accept the third party certificatation test. |
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Steel springs average dimension(mm)
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80x1.40
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55x1.20
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45x1.20
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60x1.40
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55x1.00
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45x1.00
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60x1.30
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50x1.40
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40x1.40
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60x1.20
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50x1.30
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40x1.20
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60x1.10
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50x1.20
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40x1.00
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60x1.00
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50x1.00
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30x1.00
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55x1.40
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45x1.40
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55x1.30
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45x1.30
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Standard
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Grade
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General Size
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Delivery Condition
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ASTM A36
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A36/A36-B
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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ASTM A283
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A283-B/A283C
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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ASTM A572
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A572Gr50-B/A572Gr42-B
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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ASTM A515
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A515Gr70
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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ASTM A516
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A516Gr70
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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JIS G 3101
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SS400-B
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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JIS G3136
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SN400B
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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EN10025-2:2004
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S235JR-S355K2+N
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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EN10025-5:2004
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S355J2W/S355K2W
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5-20 * 2300-2500 * C
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Boron added or Black Condition
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Item
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GB
Standard |
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Spring steel
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16Mn
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40Mn
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65Mn
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50CrV4
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50CrVA
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60Si2Mn
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60Si2MnA
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Grade
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Rank
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Chemical Composition( %)
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C
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Mn
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Si
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S
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P
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Q195
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0.06~0.12
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0.25~0.50
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≤0.3
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≤0.05
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≤0.045
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Q215
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A
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0.09~0.15
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0.25~0.55
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≤0.3
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≤0.05
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≤0.045
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B
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≤0.045
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Q235
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A
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0.14~0.22
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0.30~0.65
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≤0.3
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≤0.05
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≤0.045
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B
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0.12~0.20
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0.30~0.70
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≤0.045
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C
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≤0.18
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0.35~0.80
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-
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≤0.04
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≤0.04
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D
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≤0.17
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≤0.035
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≤0.035
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Q255
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A
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0.18~0.28
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0.40~0.70
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≤0.3
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≤0.05
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≤0.045
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B
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≤0.045
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Q275
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0.28~0.38
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0.50~0.80
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≤0.35
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≤0.05
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≤0.045
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Packing & Delivery
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