SNB21-1
2016-08-23 14:42:52 Origin： Remark：0 Click：
JIS G4108 Technical specifications of Bolting materials for high temperature service SNB21-1 Round bar, Flat bar, Plate Stock available, Heat treatment
MATERIAL TECHNICAL DATA SHEET - JIS SNB21-1
MATERIAL CATEGORY: Alloy steel bolting materials for high temperature service
MATERIAL SPECIFICATIONS: JIS G4108 -2007
STOCK AVAILABLE - Round bar Diam. 20 ~ 200mm
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.36 ~ 0.44
Silicon, Si (%): 0.20 ~ 0.35
Manganese, Mn (％): 0.45 ~ 0.70
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (%): 0.80 ~ 1.15
Nickel, Ni (%): -
Molybdenum, Mo (%): 0.50 ~ 0.65
Vanadium, V (%): 0.25 ~ 0.35
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Diam.: 100mm Max.
Tensile strength, Rm ≥ MPa: 1140
Yield strength, Rp0.2 ≥ MPa: 1030
Elongation, A5≥ (％): 10
Reduction of area, Z ≥ (％): 35
Hardness | HBW ≤: 321 ~ 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 & DIMENSIONS
Round bar (diameter): 5.5mm to 350mm
Square bar / flat bar (Width X Thickness): 10mm to 1000mm
Steel sheet / plate: T0.50 ~ 50mm X W10 ~ 2000mm X random length or in coil form.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com.) our resident team of qualified production engineers.
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