High Chromium Cast Iron
High chromium cast iron is the third generation of white cast iron developed from ordinary white cast iron and hard nickel cast iron.The chromium content of high chromium white cast iron is more than 11%, and the ratio of chromium to carbon is between 4~8.Under these conditions, M7C3 type carbides with high hardness almost completely replace M3C type carbides. The M7C3 type carbides basically exist in an isolated hollow hexagonal shape. Compared with the M3C type carbides, the matrix continuity is greatly enhanced, so the toughness of the whole material is significantly improved.At present, high chrome cast iron is widely used in mining, cement, electric power, road construction machinery and refractory materials.
The chemical composition of high chrome cast iron:
High chrome cast iron (containing 12% chromium >) is an excellent wear resistant material.In the research of high chrome cast iron, generally focus on high chrome cast iron such as Cr15, Cr20.With the increase of Cr content and the addition of various alloying elements, the influence on the change properties of the structure was studied.
The characteristics of high chromium cast iron:
High Cr cast iron has excellent wear resistance and high temperature plasticity, and its wear-resistant parts are widely used in metallurgy, mining, building materials, railway, coal mine, military industry, energy and other fields. But due to the poor impact toughness of high chrome cast iron, in order to make it the best antiwear performance and using effect, is engaged in production of high Cr cast iron foundry workers, constant by adjusting the chemical composition, micro alloying modification, inoculation and so on change the matrix organization, refine the grain, which significantly improves the performance of high chrome cast iron and using effect.
The high temperature strength and high temperature hardness of high Cr cast iron are high, especially in the atmosphere containing chemical components such as SO2 oxidation resistance is very good. Therefore, it is widely used in heat resisting parts of blast furnace, coke oven, sintering furnace and other industrial furnaces. Especially at high temperature, high chrome cast iron also has better physical wear resistance, which is better than high aluminum cast iron.
High chromium cast iron application:
High chrome cast iron as high wear-resistant material, has been effectively used in crushing, grinding, conveying and other mechanical and metallurgical equipment, particularly in the abrasive wear and impact wear of parts (such as crusher roller, bin liners, bell and hopper, blast furnace coal worse lining plate, coal mill roller cover, rolling stick, slurry pump flow components, etc.) is more widely applied.
| Item | High Cr White Iron | High Cr Alloy Steel | High Mn Steel | Ni-hard Cast Iron |
| C | 2.4-3.2 | 1.1-2.2 | 0.9-1.3 | 2.4-3.6 |
| Si | 0.6-1.2 | 0.6-1.2 | ≤0.8 | ≤0.8 |
| Mn | 0.5-1.0 | 0.5-1.0 | 11.0-18.0 | ≤2.0 |
| Cr | 12.0-30.0 | 11.0-30.0 | 1.5-2.5 | 1.5-10 |
| S | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.15 |
| P | ≤0.06 | ≤0.06 | ≤0.06 | ≤0.15 |
| Mo | 0.1-3.0 | 0.1-3.0 | ≤1.0 | ≤0.1 |
| Cu | 0.1-1.0 | 0.1-1.0 | – | – |
| Ni | 0-0.3 | 0-0.3 | – | 3.3-10 |
| Re | – | – | – | – |
| Equivalent Specification | GB/T8263-1999 | GB/T5680-1998 | GB/T8263-1999 | |
| AS2027 Cr27 | DL/T 681-1999 | AS2027/Ni-Cr1-550 | ||
| AS2027 CrMo 15/3 | JIS G 5153-1999 | AS2027/Ni-Cr2-500 | ||
| AS2027 CrMo 20/2/1 | ASTM A128 | AS2027/Ni-Cr4-500 | ||
| ASTM A532 Class Ⅲ Type A 25%Cr | DIN GX120Mn12 | AS2027/Ni-Cr4-600 | ||
| ASTM A532 Class Ⅱ Type B 15%Cr-Mo | AFNORZ120Mn12 | AS2027/Ni-Cr4-630 | ||
| BS 4844 3E | ASTM A532 1-A,B,C,D | |||
| DIN1695 | ASTM A532 2-A,B,C,D,E | |||
| NFA32401 | ASTM A532 3-A | |||
| Material Type | Martensite Matrix | Austenitic Mn Steel | – | |
| Hardness | HRC≥56 | HB≤300 | HRC≥56 | |
| Impact Value | AK≥4J | AK≥80J | – |
FAQ:
Q: Can you manufacture Customization products?
A: Yes, we can.
We can produce both standard and special prosucts.
Our can make them according to your drawings and samples.
Q: Do you provide free samples?
A: Yes, usually we provide free samples for testing under the condition of freight paid by customer.
Q: What is the Warranty for our products ?
A: If any quality problems on our side occurred in this period , we will take on the shipping cost and replacement.
Q: Can the products be customized as our need, such as put on our logo?
A: Surely our products can be customized as your need, Put on your logo is also available.
Q: What information do we need to provide to you in order to confirm our parts order?
A: provide us your drawings or detailed specifications for our technical staff could make the drawing.
Q: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q: When will make delivery?
A: Delivery Time
Sample Order: 20days after receipt of the full payment.
Stock Order: 10 days after receipt of the full payment.
OEM Order: 40 days after receipt of the deposit.
Q: After-sales Service?
A: 1 year warranty for all kinds of products;
If you find any defective accessories first time, we will give you the new parts for free to replace in the next order, as an experienced manufacturer, you can rest assured of the quality and after-sales service.
Q: Transportation?
A: Transported by DHL, UPS, EMS, Fedex, Air freight, Sea freight.
Q: Do you support drop shipping?
A: Yes, your drop shipping is aviable.
Eternal Bliss Alloy Casting & Forging Co, Ltd.
Caesar
E-mail: sales@ebcastworld.com
Our What’s app: 0086-130 930 23772
www.ebcastworld.com
