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SAE G2500a Details

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G2500a Application:Used in the products of the automobile, truck, tractor, and allied industries

Category Type Grade Microstructure Designations
Grades Cast Iron and Cast Steel G2500a Ferrite-Pearlitic USA - SAE , ASTM A 159 (1983) - Automotive gray iron castings

Chemical composition(wt.%) of G2500a grade: ASTM A 159 (1983)

Elements Min.（≥） Max.（≤） Similar Remarks
C - 3.40
Si 1.60 2.10
Mn 0.60 0.90
P - 0.15
S - 0.12
Brake drums and clutch plates for moderate service requirements, where high carbon iron is desired to minimize heat checking. Lamellar pearlite ferrite if present not to exceed 15%. 

Mechanical properties of grade G2500a ASTM A 159 (1983)

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
873 (≥) 792 (≥) 24 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical properties of grade G2500a ASTM A 159 (1983)

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
183 (≥) 456 (≥) 14 22 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 421
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
631 997 791

G2500a - Form of Supply

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

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
G2500a SAE USA
Used in the products of the automobile, truck, tractor, and allied industries

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