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56Si7 1.5026 Bright Spring Steel Rod Soft Annealed Customized

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Brand Name: FUSHUN
Model Number: 56Si7
Certification: ISO 9001
Place of Origin: CHINA
Payment Terms: TT LC DP
Supply Ability: 50000 TONS PER YEAR
Delivery Time: 20 DAYS
Color: Silver
Surface Treatment: Bright
Elasticity: High
Length: Customized
Hardness: High
Size: Customized
Heat Resistance: Excellent
Material: Spring Steel
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56Si7 1.5026 Bright Spring Steel Rod Soft Annealed Customized

56Si7 1.5026 Bright Spring Steel Rod


We can supply bright steel rod after +QT heat treatment.


Ground bright steel

We supply ground bright steel according to DIN EN 10278 to tolerance class IT 6.


Turned/Peeled bright steel

We supply peeled round material according to DIN EN 10278 in tolerance class IT 11 or IT 9. Other tolerances can be supplied upon request.


Polished bright steel

The first stage, if the material is unfinished, starts with a rough abrasive (perhaps 60 or 80 grit) and each subsequent stage uses a finer abrasive, such as 120, 180, 220/240, 320, 400 and higher grit abrasives, until the desired finish is achieved.


Drawn bright steel

Drawn bright steel is produced from hot-rolled steel bar or wire by chipless drawing.

We supply drawn bright steel in a wide range of cross-sectional shapes according to DIN EN 10278 in tolerance class IT 11 or IT 9.


International steel grades:

BS: 251A58
AFNOR: 55Si7RR,56SC7
SAE:9255

Chemical composition:

NameNumberCSiMnPS
max.max.
56Si71.50260,52-0,601,60-2,000,60-0,900,0250,025

Application:

Steel for different types of springs as leaf springs, helical springs, belleville washers .


Hot forming and heat treatment:

Hot forming:1050 - 850°C
Hot deformation:900 - 830°C
Normalising:850 - 880°C
Soft annealing:650 - 690°C
Hardening:840 - 870°C/oil
min. 55 HRC or 600 HV
as quenched

Mechanical Properties:

Condition of deliverySoft annealed (+A) or soft annealed and slightly rerolled (+LC)Quenched and tempered (+QT)
0,2% proof stress Rp0,2 [N/mm²]max. 6001200 - 1700
Tensile strength Rm [N/mm²]max. 740-
Fracture elongation A80 [%]min. 12-
Hardness [HV]max. 230370 - 520
Hardness [HRB]max. 96-
Hardness [HRC]-38,5 - 50,5

Typical hardness values (HV) for quenched and tempered materials at different thickness ranges

Effective thickness [mm]0,30<=0,500,50<=0,750,75<=1,001,00<=1,501,50<=2,002,00<=3,00
Hardness [HV]485 - 535465 - 515455 - 505445 - 495425 - 475415 - 465

Quality 56Si7 1.5026 Bright Spring Steel Rod Soft Annealed Customized for sale
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