Alloy steel casting is the steel casting process that is alloyed with numerous elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. Most commonly, alloy steels used in investment casting are low-alloy steels.
Strictly speaking, every steel is an alloy, but not all steels are called “alloy steels”. The simplest steels are iron (Fe) alloyed with carbon (C) (about 0.1% to 1%, depending on type). However, the term “alloy steel” is the standard term referring to steels with other alloying elements added deliberately in addition to the carbon. Common alloyants include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common alloyants include aluminum, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead, and zirconium.
With investment castings made in alloy steel, we can achieve lots of properties including (as compared to carbon steels): Strength, hardness, toughness, wear resistance, corrosion resistance, and hardenability. Of course, heat treatment will help to improve some of these improved properties if casting can not meet directly.
Common Alloy Steel Grades for Casting
| C | Si | Mn | Cr | Mo | P≤ | S≤ | Ni | |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | |||
| 35CrMo | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | 0.15-0.25 | |||
| 40CrNiMo | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.60-0.90 | 0.15-0.25 | 1.25-1.65 | ||
| 4130 | 0.28-0.33 | 0.15-0.35 | 0.40-0.60 | 0.80-1.10 | 0.15-0.25 | 0.035 | 0.04 | |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-0.10 | 0.80-1.10 | 0.15-0.25 | 0.035 | 0.04 | |
| 8630 | 0.28-0.33 | 0.15-0.35 | 0.70-0.90 | 0.40-0.60 | 0.15-0.25 | 0.035 | 0.04 | 0.40-0.70 |
Alloy Steel Casting Manufacturer & Exporter
Traditionally, alloy steel casting can get better properties than carbon steel castings. By comparison, alloy steel casting costs more for its higher material cost. Alloy steel casting is widely used for industrial applications, such as bucket teeth, agricultural wear parts, and many other industrial components utilize cast alloy steel parts in their operations.
Together with carbon steel casting and stainless steel casting, TCC casting can make alloy steel castings as well. We can provide custom alloy steel investment castings to meet your specifications. Contact us if you are soucing a reliable supplier in China for alloy steel investment castings. Start our cooperation from a trial order with attractive prices.