China 15589443 15589448 Brake Disc and Hub Assembly, Find details about China 15589443 Disc, 15589443 Brake Disc from 15589443 15589448 Brake Disc and Hub Assembly
Cast iron | ||||||||||||
CHEMICAL COMPOSITION(mass%) | ||||||||||||
C | SI | Mn | Ni | Cr | Mo | Cu | S | P | Sn | Ti | V | |
% MIN | 3.65 | 1.6 | 0.4 | / | 0.15 | / | 0.3 | / | / | / | / | / |
% MAX | 3.8 | 2.1 | 0.8 | 0.1 | 0.35 | 0.25 | 0.6 | 0.15 | 0.1 | 0.15 | 0.05 | 0.05 |
MICROSTRUCTURE | ||||||||||||
MATRIX | Type of matrix | Fine Lamellar | ||||||||||
Permissible limit | 5% Max, well distributed | |||||||||||
Ledebutite | Not permissible | |||||||||||
GRAPHITE (To UNI EN ISO 945) | Shape | ∣ | ||||||||||
Distribution | A: 70% MIN | |||||||||||
D·E:<4% Disporsed | ||||||||||||
B: Resto/Remainder | ||||||||||||
Size | 3- 4 -5 : 70% MIN | |||||||||||
2: Traces | ||||||||||||
6:≤15% | ||||||||||||
Cementite and free carbides | Traces up pt 1% MAX permissible | |||||||||||
MECHANICAL PROPERTIES OF CASTING | ||||||||||||
HARDNESS (HBW) | On machined braking surfaces | 170~210 | ||||||||||
On braking surfaces as-cast (0.5 mm below surface) | 230MAX | |||||||||||
TENSILE STRENGTH(Rm) (N/m²) | On braking surface | 170 MIN | ||||||||||
On mounting flange | ||||||||||||
WEDGE INDENTATION STRENGTH (Rmk)(N/m²) | On braking surface | 125 MIN | ||||||||||
Young's MODULUS (E) (N/m²) | / | 95 | ||||||||||
PHYSICAL PROPERITIES (Indicative values) | ||||||||||||
Density (volumic mass) | 7.1 kg/dm³ | |||||||||||
Coefficient of thermal expansion at 20 degree | 9.10 1/K | |||||||||||
Thermal conductivity at 100 degree | 50 W/Mk |