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AISI ASTM 7Q

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Grades | Special Alloy | ASTM 7Q

  • AISI ASTM 7Q Details

    AISI standard material ASTM 7Q belongs to the China, from the steel to the finished product, we have the perfect technology and many years of accumulation of experience, we can now produce products include steel coil, sheet, plate,round bar, square steel, steel wire, steel pipe, forgings, other...

Chemical composition(mass fraction)(wt.%)
C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) W(%) Cu(%)
0.25-0.35 0.20-0.80 0.40-0.70 Max 0.04 Max 0.045 0.80-1.10 0.15-0.25 Max 0.10 Max 0.50
Mechanical properties of grade ASTM 7Q
Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
659 (≥) 986 (≥) 33 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 243
Physical properties of grade ASTM 7Q
Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
732 (≥) 478 (≥) 33 12 11 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
518 656 561 - - -
ASTM 7Q Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED