Description
Overview Of CORRAX
CORRAX is a premium martensitic stainless steel optimized for additive manufacturing (AM) and precision tooling applications. Renowned for its exceptional corrosion resistance, high hardness, and superior polish ability, CORRAX is widely used in industries requiring durable, wear-resistant components with complex geometries.
Powder Chemical Composition(wt,-%)
| Element | C | Cr | Ni | Co | Mo | Al |
| CORRAX | ≤0.05 | 10.00-
13.00 |
8.50-10.00 |
– |
1.00-1.60 | 1.60-2.30 |
| Element | Ti | S | P | O | N | Fe |
| CORRAX | – | ≤0.010 | ≤0.010 | ≤0.020 | ≤0.015 | Bal |
Physical Properties
| Grade | Size | Particle size distribution | Hall flow
rate |
Bulk
density |
Tap
density |
||
| D10(μm) | D50(μm) | D90(μm) | |||||
| CORRAX | 15-53μm | ≥15 | 30-40 | ≤60 | ≤20s/50g | ≥4.0g/cm³ | ≥4.5g/cm³ |
Mechanical Properties
| Grade | Hardness
(HRC) |
Tensile strength
(Ob/Mpa) |
Yield strength
(Opo.2/Mpa) |
Elongation at break(δ5/%) |
| CORRAX | 48-51 | ≥1500 | ≥1400 | ≥10 |
Heat Treatment Recommendation
| Grade | Recommended HT solution |
| CORRAX | 860±20℃/0.5H/AC+ 520±10℃/3H/AC |
Comparison with Similar Alloys
| Alloy | Corrosion Resistance | Hardness (HRC) | Primary Use |
| CORRAX | Excellent | 48–52 | Injection molds, medical |
| H13 Tool Steel | Moderate | 45–50 | Die casting |
| 316L Stainless | Excellent | 20–25 | General corrosion resistance |
Note: For AM processes, powder flowability and packing density are critical; CORRAX spherical particles ensure high-density prints with minimal porosity
Key Features
Corrosion Resistance
● Outperforms conventional tool steels in humid or acidic environments, making it ideal for plastic injection molds exposed to corrosive polymers (e.g., PVC).
High Polishability
● Achieves mirror-like finishes (Ra < 0.05 μm), critical for optical-grade molds and medical devices.
Additive Manufacturing Compatibility
● Suitable for laser powder bed fusion (LPBF) and binder jetting, with minimal post-processing distortion due to low residual stress.
Heat Treatment Flexibility
● Hardened to HRC 50+ via quenching (1020–1050°C) and tempering (200–600°C), balancing strength and toughness.
Primary Applications
Plastic Injection Molding
● Molds for automotive lenses, medical devices, and consumer electronics requiring corrosion resistance and high gloss.
Medical Tools
● Surgical instruments and dental components, benefiting from biocompatibility after passivation.
Aerospace
● Lightweight, high-strength brackets and housings produced via 3D printing.
Food Processing
● Equipment parts compliant with FDA standards due to non-reactivity and ease of sterilization.
