Material Properties Comparation
| Ductile Cast Iron | Cast Steel | |||||
|---|---|---|---|---|---|---|
| Specification | Chinese Standards | Equivalent Standards | Chinese Standards | Equivalent Standards | ||
| GB/T1348-2009 | ISO | ASTM536 | GB/T11352 | ISO3755 | ASTM | |
| QT450-10 | 450-10 | Gr.65-45-12 | ZG230-450 | Gr.230-450W | Gr.65-35 | |
| Tensile Strength | ≥450(Mpa） | ≥450(Mpa） | ≥448(Mpa） | ≥450(Mpa） | ≥450(Mpa） | ≥450(Mpa） |
| Yield Strength | ≥310（Mpa） | ≥310（Mpa） | ≥310（Mpa） | ≥230（Mpa） | ≥230（Mpa） | ≥240（Mpa） |
| Elongation in 50mm | ≥10（%） | ≥10（%） | ≥12（%） | ≥22（%） | ≥22（%） | ≥24（%） |
Ductile Cast Iron Advantages
≥450Mpa. No big difference with cast steel.
Ductile cast iron has better abrasive resistance, corrosion resistance and inoxidizability properties than cast steel.
Ductile cast iron’s corrosion resistance is superior to unalloyed steel, and even highly alloyed steels in certain environments.
Ductile cast iron can reach ≥10%, but cast steel can reach higher than 22%. And it’s impact property is also lower than cast steel
Because of the increased strength and ductility, ductile cast iron is used in more engineered applications:
- Bollards on Jetties
- Cable drums
- Frames
- Gear boxes
- Pumps
Cost lower than cast steel. even much lower than stainless steel.
Cast Steel Advantages
≥450Mpa. No big difference with ductile cast iron.
Cast steel has LOWER abrasive resistance, corrosion resistance and inoxidizability properties than ductile cast iron.
Cast steel can reach higher than 22% and with higher impact properties, AKV 30J
Because of its reliability and strength, numerous industries rely on steel castings.
- Industries that use steel castings range from food processing and electronics to oil and gas.
- Some specific industries, such as for railroad, construction, drilling, transportation, and mining industries.
- steel casting gears, valve bodies, pump casings, mining machinery, marine equipment, engine cylinder blocker, forging presses, and railroad truck frames.
Steel isn’t as easy to cut with the same consistency, and it causes more tool wear, resulting in higher production costs. Hardened steels, or those with higher carbon content, also increase tool wear.