X1 Metal 420i for Binder Jet 3D Printing
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About X1 Metal 420i for Binder Jet 3D Printing
X1 Metal 420i is a matrix metal material composed of stainless steel and bronze, consisting of 60% 420 stainless steel and 40% bronze. The material combines good mechanical properties with excellent wear resistance and can reach a density of more than 95%.
The X1 Metal 420i is ideal for high-wear applications such as pump parts, drilling and mining equipment parts. It can also be used for industrial parts, molds, tools, artwork and decorations.
In short,X1 Metal 420i is a stainless steel and bronze composite material with good mechanical properties and strong wear resistance, which can be widely used in a variety of high-wear industrial environments, with a density of more than 95%.
Typical X1 420i Material Properties
| Material Properties | Test Method | Values |
|---|---|---|
| Tensile Strength - Ultimate Strength | ASTM E8 | 99 ksi (682 MPa) |
| Yield Strength (0.2% offset) | ASTM E8 | 66 ksi (455 MPa) |
| Elastic Modulus (ASTM E8) | ASTM E8 | 21.4 Mpsi (147 GPa) |
| Elongation | ASTM E8 | 2.3% |
| Hardness | ASTM E18 | 97 HRb |
| Fractional Density | MPIF 42 | 95%+ |
| Density | MPIF 42 | 0.284 lbs/in^3 (7.86 g/cm^3) |
| Machinability | Refer to ExOne for recommendations | |
| Weldability | Use silicone bronze rod & TIG weld | |
| Thermal Conductivity | ASTM E1530 | 13 BTU/hr ft °F (22.6 W/m°K) |
| Specific Heat | ASTM E1263 | 0.114 BTU/lb °F (478 J/kg°K) |
| Thermal Expansion Coefficient | ASTM E228 | 7.4 x 10-6/°F (13.4 x 10-6/°K) |
Surface Finish
- After sintering: ≈ 600 μin Ra (15 μm Ra )
- Bead blasting: ≈ 300 μin Ra (7.5 μm Ra )
- Barrel finishing: ≈ 50 μin Ra (1.25 μm Ra )
Post Processing
The X1 metal 420i needs to be cured after printing, and then bronze sintering penetration, and different workability and hardness can be obtained by adjusting the cooling temperature to meet the needs of different uses.
General Garolite G11 (FR5) Material Properties
| Tensile Strength, Yield (MPa) | Compressive Strength (MPa) | Hardness (Rockwell M) | Flammability Rating | Continous Operating Temperature (°C) |
|---|---|---|---|---|
| 255-295 | 434 | 112 | UL94 V-0 | 150 |
Finishes
X1 Metal 420i printed parts can achieve a density comparable to machined parts and can undergo subsequent machining or polishing.
Standard post-treatment involves removing the support structure during the printing process and using sandblasting to obtain a uniform surface.
When necessary, specific surface structures and features can be produced by CNC machining or polishing, but this needs to be evaluated according to the specific use requirements of the part.
In short, the 3D printed X1 metal 420i allows the production of high-density parts, which can be standard post-processing such as de-supporting and sandblasting, and can also be CNC finishing or polishing
Cost-saving Design Tips
To reduce the cost of X1 metal 420i 3D printing, you can consider the following:
- Follow the DFM principle in the design stage to ensure that there are enough powder holes inside the model.
- Optimize the model design and consider the support structure to prevent warping during printing.
- Reasonable design and limited post-processing capacity. X1 metal 420i is also prone to work hardening during post-treatment, increasing the difficulty and cost of processing.
- Streamline the model, rational use of materials, and minimize the waste of materials when printing.
- Consult experts if necessary to optimize the design scheme.