1. Description of brake disc : 4247.17
| 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 |
2. About us :
Qingdao Pujie Industry Co., Ltd. is a worldwide leader, specializing in disc brake pads and shoes,brake discs and drums for all makes and models of passenger and commercial vehicles. PUJIE continuously strives for high level of customer satisfaction, by maintaining high quality raw material, advance production technology and fast delivery.
PUJIE products are manufactured under ISO/TS 16949 & ISO 9001 certifications to ensure the highest level of quality.
3. Our Strength :
1. Wide range of brake parts :
We can supply you a geart variety of brake parts , such brake shoes, brake rotors , brake discs and so forth . You name the O.E. No. , we can give you what you need for sure .
2. Better price :
This is our customers cares most . And I believe you care the question ,too . What I can assure you is that we can save you 10% of your production line , both domestically or any other circumstance .
3. Top service :
We can cope with all the circumstances that we encounter and can fix the problem immediately . Our team are all have expertise knowledge . With that , I think there is nothing to worry about .
4. Factory pictures :
Audited Supplier 
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