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AS 1830 T150 is an unalloyed low-tensile-strength gray cast iron that has high carbon and silicon contents, and thus the highest thermal conductivity and damping capacity.
Equivalent Grades for AS 1830 T150 in Australia:
AS 1830 T150 is equal to ISO 185/JL/150, EN-GJL-150 in European, HT150 in China, Class 20, or 25 in USA, GG15 in Germany or Austria, FC150 in Japan, G15 in Italy, FGL150 in France, 150 in UK, FG15 in Spain, O115 in Sweden, SJG150 in Norway, etc.
The Chemical Composition for AS 1830 T150 Gray Cast Iron:
For gray iron casting, there is no any standard mentioned the chemistry composition, so the iron foundry could adjust the chemical composition according to their experience, but the mechanical properties are the necessary requirement.
Mechanical properties in separately cast test pieces with 30 mm as-cast casting diameter
Characteristic |
Symbol |
SI-unit |
Material designation |
AS 1830 T150 |
ISO 185/JL/150 |
Tensile strength |
Rm |
N/mm2 |
150 to 250 |
0,1% proof strength |
Rp0,1 |
N/mm2 |
98 to 165 |
Elongation after fracture |
A |
% |
0,3 to 0,8 |
Compression strength |
σdb |
N/mm2 |
600 |
0,1% compression yield point |
σd0,1 |
N/mm2 |
195 |
Bending strength |
σbB |
N/mm2 |
250 |
Shear strength |
σaB |
N/mm2 |
170 |
Torsional strengthb |
τtB |
N/mm2 |
170 |
Modulus of elasticityc |
E |
kN/mm2 |
78 to 103 |
Poisson’s ratio |
v |
- |
0,26 |
Bending fatigue strengthd |
σbW |
N/mm2 |
70 |
Fatigue limit under reversed tension-compression stressese |
σzdW |
N/mm2 |
40 |
Fracture toughness |
KIc |
N/mm3/2 |
320 |
NOTE 1 N/mm2 is equivalent to 1 MPa. |
b Torsional fatigue strength τtW ≈ 0,42 × Rm.
c Depends on the quantity and form of the graphite, as well as on the loading.
d The following approximately applies: σbW ≈ 0,35 − 0,50 × Rm.
e The following approximately applies: σzdW ≈ 0,53 × σbW ≈ 0,26 × Rm. |
Physical properties in separately cast test pieces with 30 mm as cast casting diameter
Characteristic |
Symbol |
SI-unit |
Material designation |
AS 1830 T150 |
ISO 185/JL/150 |
Density |
ρ |
kg/dm3 |
7,10 |
Specific heat capacity
Between 20°C and 200°C
Between 20°C and 600°C |
c |
J/(kg K) |
460
535 |
Liner expansion coefficient
Between -100°C and +20°C
Between 20°C and 200°C
Between 20°C and 400°C |
α |
µm/(m K) |
10,0
11,7
13,0 |
Thermal conductivity
at 100°C
at 200°C
at 300°C
at 400°C
at 500°C |
λ |
W/(m K) |
52,5
51,0
50,0
49,0
48,5 |
Resistivity |
ρ |
Ω mm2/m |
0,80 |
Coercivity |
Ho |
A/m |
560 to 720 |
Maximum permeability at room temperature |
μ |
μH/m |
220 to 330 |
Hysteresis losses at B=1T |
|
J/m3 |
2500 to 3000 |
The Applications for AS 1830 T150 Gray Cast Iron:
The lower grade of grey iron mainly used for applications where strength is not essential, such as counterweights, crane balls, stove parts, handwheels, belt pulleys, pump bodies, etc.. |
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