Investment Casting & Sand Casting

Typically used with metals with a high melting point like steel.  Although aluminum can be used in this process, die casting may be a better alternative.

• Material: Carbon steel, Low alloy steel, Stainless steel,
  Nickel and Cobalt alloys, Heat resistant alloys, Aluminum, Brass, Copper, CuVerro antibacterial copper, Bronze
• 0.7 oz. – 22 lbs.
• Up to 15 in long
• Wall thickness:  0.04– 2 in

Advantages and Disadvantages of Investment & Sand Casting

Advantages

• Can be used for small or very large parts.
• Good surface finish
• Good dimensional accuracy
• Can make intricate parts
• Can use most metals
• No flash or parting line

Disadvantages

• High unit cost especially for small quantity
• Long lead-time
• Limited on size and depth for small holes.

Vacuum heat treatment, passivation, high pressure washing,

ISO 9001
TS 16949
ISO 13485
ISO 14001

Investment Casting: Tolerance Capabilities

Investment castings are designed to minimize the cost of producing close tolerance parts.

Typical tolerances listed on the chart below can be expected for production repeatability of all casting dimensions. Premium tolerances may require secondary operations that can impact cost and lead time.

• Wall Thickness Tolerance – 0.01 ~ 0.015 (0.25mm ~ 0.375mm)
• Angularity – 0.5° ~ 1°
• Perpendicularity – 0. 008 / 1 (0.08mm / 10mm)
• Surface Texture
  125 RMS Max
  115 AA Max
  60 Wheelcraft Max
• Dimension of Size
  Max. Size 15 x  12 * 8 inch

Most Commonly Used Alloys

The most common alloys are listed below. Other alloys are available upon request. Specific material chemistry and mechanical specifications will be available upon request.

• Carbon Steel
• Low Alloy Steel
• 300 Series Stainless Steel
• 400 Series Stainless Steel
• Precipitation Hardened Stainless Steel
• Tool Steel
• Nickel Base Alloy
• Cobalt Base Alloy
• Aluminum Alloy