| |
T350 is a high material grade of gray cast iron defined in Australia standard AS 1830. The similar grade is GG35 in Germany and HT350 in China.
AS 1830 T350 Equivalent Grades:
AS 1830 T350 has equal cast iron grades in other countries, such as EN-GJL-350 in European, GG35 in Germany, HT350 in China, FC350 in Japan, ASTM A48 CLASS 50 in USA, G35 in Italy, FGL350 in France, FG35 in Spain, O135 in Sweden, SJG350 in Norway or ISO 185/JL/350.
AS 1830 T350 Chemical Composition:
The normal chemical composition for AS 1830 T350 is as the following:
C |
Si |
Mn |
S |
P |
2.9 - 3 |
1.2 – 1.5 |
0.7 – 1.1 |
max 0.12 |
max 0.2 |
This is just an experience data. According to the related standards, the mechanical properties are the inspection standard. The iron foundries can adjust the chemical components according to their own experience.
Mechanical properties in separately cast test pieces with 30 mm as-cast casting diameter
- Summarized from ISO 185/JL/350, for your reference.
Characteristic |
Symbol |
SI-unit |
Material designation |
AS 1830 T350 |
ISO 185/JL/350 |
Tensile strength |
Rm |
N/mm2 |
350 to 450 |
0,1% proof strength |
Rp0,1 |
N/mm2 |
228 to 285 |
Elongation after fracture |
A |
% |
0,3 to 0,8 |
Compression strength |
σdb |
N/mm2 |
1080 |
0,1% compression yield point |
σd0,1 |
N/mm2 |
455 |
Bending strength |
σbB |
N/mm2 |
490 |
Shear strength |
σaB |
N/mm2 |
400 |
Torsional strengthb |
τtB |
N/mm2 |
400 |
Modulus of elasticityc |
E |
kN/mm2 |
123 to 143 |
Poisson’s ratio |
v |
- |
0,26 |
Bending fatigue strengthd |
σbW |
N/mm2 |
145 |
Fatigue limit under reversed tension-compression stressese |
σzdW |
N/mm2 |
85 |
Fracture toughness |
KIc |
N/mm3/2 |
650 |
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
- Summarized from ISO 185/JL/350, for your reference.
Characteristic |
Symbol |
SI-unit |
Material designation |
AS 1830 T350 |
ISO 185/JL/350 |
Density |
ρ |
kg/dm3 |
7,30 |
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) |
45,5
44,5
43,5
42,0
41,5 |
Resistivity |
ρ |
Ω mm2/m |
0,67 |
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 |
Applications for AS 1830 T350 Gray Cast Iron:
Used for manufacturing lathes, punch presses and other heavy machinery with heavy stress, steel rolling slide plate, rollers, coking column, cylinder mixer gear ring, supporting wheel seat, etc. |
|
