SUP7
2016-07-29 11:03:49 Origin： Remark：0 Click：
Technical specifications of JIS Standard Spring steel SUP7 Round bar, Flat bar, Strip SUP7 Cold rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold worked.
MATERIAL TECHNICAL DATA SHEET - Grade JIS SUP7
MATERIAL CATEGORY: JIS Spring steel
MATERIAL SPECIFICATIONS: JIS G4801 -2005
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.56 ~ 0.64
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.56 ~ 0.64
Silicon, Si (%): 1.80 ~ 2.20
Manganese, Mn (％): 0.70 ~ 1.00
Manganese, Mn (％): 0.70 ~ 1.00
Phosphorus, P (％)≤: 0.030
Sulfur, S (％)≤: 0.030
Chromium, Cr (%): -
Copper, Cu (%): ≤ 0.30
HEAT TREATMENT & MECHANICAL PROPERTIES
Quenched 830 ~ 860℃, oil cooled. Tempered 490 ~ 540℃
Mechanical property ≥ σb/MPa: 1230
Mechanical property ≥ σs/MPa: 1080
Mechanical property ≥ σs/MPa: 1080
Mechanical property ≥ δ5 (%): 9
Mechanical property ≥ ψ (％): 20
Hardness / COND QT.HB: 363 ~ 429
MELTING PROCESS AND FEATURES
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted or by agreement. Spring steel should possess excellent combination property, such as mechanical property (limit of elasticity, ultimate strength, yield ratio), relaxation resistant, fatigue property, hardenability, physical and chemical property (heat resistance,low temperature resistant, antioxidation, corrosion resistance). To meet the above performance requirement, Spring steel has fine metallurgical quality ( high purity, homogeneity), excellent surface quality ( specially on surface defect and decarbur-ization), precise external form and dimensions.
PRODUCT PROFILE
Round bar (Diameter): 0.50mm to 800mm
Square bar / Flat bar (Width X Thickness): 3mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted or by agreement. Spring steel should possess excellent combination property, such as mechanical property (limit of elasticity, ultimate strength, yield ratio), relaxation resistant, fatigue property, hardenability, physical and chemical property (heat resistance,low temperature resistant, antioxidation, corrosion resistance). To meet the above performance requirement, Spring steel has fine metallurgical quality ( high purity, homogeneity), excellent surface quality ( specially on surface defect and decarbur-ization), precise external form and dimensions.
PRODUCT PROFILE
Round bar (Diameter): 0.50mm to 800mm
Square bar / Flat bar (Width X Thickness): 3mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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