18Ni300 Maraging Steel 3D Printing Service
Ultra-high-strength SLM maraging steel for high-end tooling, precision structural parts, and industrial applications that demand exceptional post-heat-treatment performance.
18Ni300 Maraging Steel is a classic high-performance steel grade widely used in additive manufacturing for tooling and precision engineering. It delivers excellent toughness, outstanding dimensional stability, and exceptional mechanical strength after heat treatment, making it suitable for injection molds, die casting molds, aerospace parts, tooling inserts, and other demanding structural applications.
What Is 18Ni300 Maraging Steel?
18Ni300 Maraging Steel is a classic ultra-high-strength steel grade that is highly valued in advanced additive manufacturing. In SLM 3D printing, it enables the production of complex precision parts with excellent mechanical performance, good toughness, and strong dimensional stability, particularly after aging heat treatment.
Compared with general stainless steels, 18Ni300 is much better suited for tooling, molds, and high-performance structural applications. Compared with other metal materials, it is especially attractive when extreme post-heat-treatment strength, precision, and reliability are the top priorities.
Best Fit for 18Ni300 Printing
- Injection molds and die casting molds
- Tooling inserts and high-end tooling components
- Aerospace parts and precision industrial components
- High-load structural parts with strict dimensional requirements
- Applications requiring ultra-high strength after heat treatment
18Ni300 Maraging Steel Specifications
Application
Industrial Metals
Technology
SLM
Price
From $25.00
Build Time
96 - 120 hours
Tolerance
±0.1mm (Within 100mm), ±0.1% (Above 100mm)
Min. Wall Thickness
1.5mm
Max. Size
330 × 320 × 280 mm
Surface Roughness
Ra 3.2–7 μm
Key Advantage
Exceptional aging-strength response
Material Character
Precise, tough, and ultra-strong
Why Choose Our 18Ni300 Printing Service
- Ultra-high strength after heat treatment for premium tooling and structural parts
- Excellent dimensional stability for molds, inserts, and precision engineering components
- Suitable for aerospace, die casting, and high-end industrial applications
- Reliable choice for complex SLM parts that need strong mechanical performance
- Ideal for tooling and extreme-performance parts where standard steels are insufficient
18Ni300 Maraging Steel Material Properties
Surface Roughness (As-built)
Ra 3.2–7 μm
Hardness (As-built)
HRC 35 ±3
Hardness (After Heat Treatment)
HRC 48 ±3
Tensile Strength (As-built)
1000 ±100 MPa
Tensile Strength (After Heat Treatment)
1900 ±100 MPa
Yield Strength (As-built)
900 ±100 MPa
Yield Strength (After Heat Treatment)
1800 ±100 MPa
Elongation (As-built)
15 ±3%
Elongation (After Heat Treatment)
6 ±2%
Best Use
Precision tooling and ultra-strong parts
Compare 18Ni300 with Other SLM Metal Materials
| Attribute | 18Ni300 Maraging Steel | CX Maraging Steel | 17-4PH Maraging Steel | 316L Stainless Steel |
|---|---|---|---|---|
| Technology | SLM | SLM | SLM | SLM |
| Application | Industrial Metals | Industrial Metals | Industrial Metals | Industrial Metals |
| Price | From $25.00 | From $25.00 | From $25.00 | From $10.00 |
| Min. Wall Thickness | 1.5mm | 1.5mm | 1.5mm | 1.5mm |
| Max Size | 330 × 320 × 280 mm | 330 × 320 × 280 mm | 334 × 358 × 400 mm | 390 × 390 × 290 mm |
| Main Advantage | Classic ultra-high-strength tooling steel | Premium extreme-load maraging steel | High strength with good dimensional stability | Corrosion resistance and balanced general performance |
| Surface Condition | Ra 3.2–7 μm | Ra 3.2–7 μm | Ra 3.2–7 μm | Ra 3.2–7 μm |
| Tensile Strength (As-built) | 1000 ±100 MPa | 1000 ±100 MPa | 900 ±100 MPa | 600 MPa |
| Tensile Strength (After Heat Treatment) | 1900 ±100 MPa | 1900 ±100 MPa | 1300 ±100 MPa | Not listed |
| Typical Use | Injection molds, die casting molds, tooling inserts, aerospace parts | High-end tooling, molds, aerospace parts, extreme-load components | Tooling components, molds, industrial parts, medical equipment | Functional structural parts, corrosion-resistant components |
| Summary | Choose 18Ni300 for classic ultra-high-strength tooling and precision structural applications. | Choose CX Maraging Steel for premium extreme-load tooling performance. | Choose 17-4PH for strong heat-treated tooling with broader industrial applicability. | Choose 316L for more general corrosion-resistant functional parts. |
Need an SLM steel for high-end tooling, inserts, or structurally demanding metal parts? 18Ni300 Maraging Steel is a proven choice when ultra-high strength, precision, and heat-treated performance are critical.
Need 18Ni300 Maraging Steel Parts Fast?
Send us your 3D file and application requirements. We can help confirm whether 18Ni300 Maraging Steel is the right metal for your project, or recommend another SLM material based on tooling requirements, target strength, heat-treatment performance, and end-use conditions.