SNB7
2016-08-15 10:10:00 Origin： Remark：0 Click：
Technical specifications of JIS alloy steel bolting materials JIS SNB7 Round bar, Flat bar, and Forgings, Steelmaking, ESR melted, Heat treatment
TECHNICAL DATA SHEET - JIS SNB7
MATERIAL CATEGORY: Alloy steel bolting materials for high temperature service
MATERIAL SPECIFICATIONS: JIS G4107 -2007
MATERIAL SPECIFICATIONS: JIS G4107 -2007
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.38 ~ 0.48
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.38 ~ 0.48
Silicon, Si (%): 0.20 ~ 0.35
Manganese, Mn (％): 0.75 ~ 1.00
Manganese, Mn (％): 0.75 ~ 1.00
Phosphorus, P (％) ≤: 0.040
Sulfur, S (％) ≤: 0.040
Chromium, Cr (%): 0.80 ~ 1.10
Nickel, Ni (%): -
Molybdenum, Mo (%): 0.15 ~ 0.25
MECHANICAL PROPERTIES AT ROOM.
Diam.: 63mm Max.
Tensile strength, σb ≥ MPa: 860
Yield strength, σ0.2≥ MPa: 725
Elongation, δ ≥(％): 16
Reduction of area, ф ≥ (％): 50
Hardness | HBW ≤: -
Yield strength, σ0.2≥ MPa: 725
Elongation, δ ≥(％): 16
Reduction of area, ф ≥ (％): 50
Hardness | HBW ≤: -
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& DIMENSION
Round bar & Disc (diameter): 5.50mm to 650mm
Square bar / Flat bar (Width X Thickness): 10mm to 1000mm
Steel strip: T0.20 ~ 3mm X W10 ~ 300mm 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& DIMENSION
Round bar & Disc (diameter): 5.50mm to 650mm
Square bar / Flat bar (Width X Thickness): 10mm to 1000mm
Steel strip: T0.20 ~ 3mm X W10 ~ 300mm X Coil
Steel sheet / plate: T0.50 ~ 50mm X W10 ~ 1000mm X random length or in coil form.
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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