Carbon steel
For industrial hardware and mechanical parts matched to their structural and functional requirements.
TECHNICAL PROFILE
Silica Sol Investment Casting
Precision investment castings in carbon steel, low alloy steel and stainless steel.
Technical overview
- Casting process
- Silica sol investment casting
- Production options
- Customer drawings, samples and molds
- Materials
- Stainless steel, carbon steel and low alloy steel
- General tolerance
- VDG P690 D1
- Surface roughness
- Ra 3.2–6.3
- Casting weight
- 0.5 g–10 kg
- Production cycle
- Jewelry: 3 days; industrial parts: 15 days
Tolerances, surface finish and production cycles are confirmed against the drawing, material and processing requirements.
QUALITY IN EVERY STEP
The right process. Attention to detail.
Wax pattern production, shell building, melting, cleaning and inspection form a complete investment casting process.
MATERIALS
Materials for your application
Low alloy steel
For CNC tooling accessories and other components, with heat treatment and surface finishing as required.
Stainless steel
Common grades include 304, 316, 316L, 430 and 420, for jewelry, architectural and industrial castings.
CASTING DETAILS
Designed with casting in mind.
Explore wall thickness, cast holes, radii and dimensional tolerances when planning your component and casting design.
- Minimum wall thickness
- 2 mm; locally down to 1 mm
- Casting radius
- R ≥ 0.5 mm
- Surface roughness
- Ra 3.2–6.3; selected parts Ra 1.6
- Angular tolerance
- ±0.5°–±1°
- Straightness
- 0.127 mm per 25 mm
- Casting weight
- 0.5 g–10 kg
Cast hole capabilities
Consider the relationship between hole diameter and depth in the component design.
Through holes
Minimum diameter 2 mm- D ≤ 7 mm: H ≤ 2D
- 7 mm < D ≤ 13 mm: H ≤ 3D
- D > 13 mm: H ≤ 4D
Blind holes
Minimum diameter 2 mm- D ≤ 7 mm: L ≤ 1D
- 7 mm < D ≤ 13 mm: L ≤ 1.5D
- D > 13 mm: L ≤ 2D
D is the hole diameter, H the through-hole depth, and L the blind-hole depth. All dimensions are in mm. Ceramic cores can allow deeper holes; discuss production volume and cost with us.
Dimensional tolerance grades
Use the VDG P690 D1, D2 and D3 grades as a reference when discussing requirements for critical dimensions.
D1
General dimensional tolerances for normal applications.
D2
For important dimensions with specific tolerance requirements.
D3
For selected critical dimensions requiring special measures, such as straightening.
View the complete linear tolerance tableBasic dimensions 0–400 mm · 22 dimension ranges
Upper limits are inclusive and lower limits exclusive, except for the first range. These values are references for casting length, width and height. Unit: mm.
| Basic dimension range | D1 tolerance | D2 tolerance | D3 tolerance |
|---|---|---|---|
| 0–6 | ±0.10 | ±0.08 | ±0.06 |
| >6–10 | ±0.12 | ±0.10 | ±0.06 |
| >10–14 | ±0.15 | ±0.12 | ±0.09 |
| >14–18 | ±0.20 | ±0.14 | ±0.09 |
| >18–24 | ±0.25 | ±0.17 | ±0.12 |
| >24–30 | ±0.30 | ±0.20 | ±0.14 |
| >30–40 | ±0.37 | ±0.25 | ±0.17 |
| >40–50 | ±0.44 | ±0.30 | ±0.20 |
| >50–65 | ±0.52 | ±0.38 | ±0.23 |
| >65–80 | ±0.60 | ±0.46 | ±0.27 |
| >80–100 | ±0.68 | ±0.53 | ±0.30 |
| >100–120 | ±0.76 | ±0.60 | ±0.33 |
| >120–140 | ±0.84 | ±0.65 | ±0.36 |
| >140–160 | ±0.92 | ±0.72 | ±0.38 |
| >160–180 | ±1.02 | ±0.80 | ±0.42 |
| >180–200 | ±1.12 | ±0.88 | ±0.43 |
| >200–225 | ±1.28 | ±0.95 | ±0.47 |
| >225–250 | ±1.44 | ±1.05 | ±0.51 |
| >250–280 | ±1.64 | ±1.15 | ±0.56 |
| >280–315 | ±1.84 | ±1.25 | ±0.63 |
| >315–355 | ±2.10 | ±1.40 | ±0.71 |
| >355–400 | ±2.40 | ±1.60 | ±0.80 |
Confirm requirements against your drawing. Confirm tolerances, wall thickness and castable features against the material, component structure and drawing. Send a drawing or sample to discuss a suitable casting plan.
Discuss your requirementsPROJECT QUESTIONS
Before you start
Can you manufacture from drawings or samples?+
We manufacture from customer drawings, samples and molds, including OEM projects, with support for materials, structure and casting design.
Which applications do your castings serve?+
Applications include architectural, bathroom and marine hardware, electroplating equipment, cutlery handles, tools, jewelry and precision mechanical parts.
What should I include in an inquiry?+
Please share a drawing or sample details, material, dimensions, quantity and surface finish requirements so we can discuss a suitable process.
How are tolerances and lead times confirmed?+
Tolerances and lead times depend on the component structure, material and processing requirements. Send us your requirements for review.
START YOUR PROJECT
Turn your idea
into a casting.
Send your drawings, samples or mold requirements. Let us help you choose a suitable material, structure and casting process.
info@zaoda.com