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B550CL hot rolled coils

B550CL hot rolled coils

B550CL steel has high strength, good fatigue resistance, plasticity and good weldability

B550CL steel Chemical Composition %

Grade

C

Si

Mn

Nb + Ti

P

S

B550CL

≤0.10

≤0.50

≤1.8

≤0.10

≤0.025

≤0.010

B550CL steel plate Mechanical Properties


Grade

Thickness

(mm)

Yield strength
(MPa)

Tensile strength
(MPa)

Elongation A50 (%)

B550CL

1.8~12.0

≥450

550~700

≥24

B550CL is steel for automobile wheel rim, the welding process parameters are

Step

Cycles(0.02s)

Current density (KA/mm2)

Pressure(KN)

1 Preheating

4

80-100

53

2 Welding

4

100-200

53

3 Tempering

2

60-80

37

4 Holding

2

0

27

B550CL steel Processing
Wheel is made up of the rim and the disk. The main processing technique for rim is roll forming. Punch forming and spin forming are usually applied for disc. Punch forming is mainly used for disc of passenger cars, while disc of commercial cars are usually punch-formed (wigh inner tire) or spin-formed (without inner tire).

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Related products : B650CL steel , B600CL steel , B500CL steel , B450CL steel

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