1j79 Precision Alloy Bar

• Type: Special Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB
• Composition: Ferrous Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Polished
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Boiler Plate
• Steel Grade: Prime Steel
• Yield RP0.2 (MPa): 724
• Tensile RM (MPa): 171
• Impact Kv/Ku: 42
• Elongation a (%): 31
• Reduction in Cross Section on Fracture Z: 44
• as-Heat-Treated Condition: Solution and Aging, Annealing, Ausaging, Q+T
• Brinell Hardness (Hbw): 242
• Transport Package: Woven Bag, Wooden Box
• Specification: ISO SGC
• Trademark: Taixie
• Origin: Wuxi, Jiangsu
• HS Code: 7507120000
• Production Capacity: 10000tons/Y

Product Description

DATASHEET FOR:STEEL GRADES:SPECIAL ALLOY:1J79

Chemical composition(mass fraction)(wt.%) of the 1J79

C(%)	Si(%)	Mn(%)	P(%)	S(%)	Ni(%)	Mo(%)	Cu(%)	Fe(%)
0.03	0.30-0.50	0.60-1.10	0.020	0.020	78.5-80.0	3.8-4.1	≤0.2	Bal

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade1J79

MECHANICAL PROPERTIES

Yield Rp0.2(MPa)	Tensile Rm(MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
724 (≥)	171 (≥)	42	31	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	242

PHYSICAL PROPERTIES 

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson's coefficient, ν
11	-	-			0.43	-
327	768	-	41.3	214		-
323	-	33	24.2			321	233

Heat treated : 1256°C - 1768°C

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