États-Unis R30001

UNS-R30001

Product Specification: LION® R30001 (Stellite 1 Type)

LION® R30001 is a high-carbon, tungsten-strengthened cobalt-chromium alloy. It is specifically engineered for the most severe service conditions where abrasive wear is the primary failure mode. By incorporating a massive volume of primary chromium carbides (Cr7C3), it offers significantly higher hardness and life expectancy than Stellite 6 or 12 in slurry and abrasive environments.

1. Composition chimique détaillée (% en poids)

CoCrWCFeDansEtMn
Équilibre28.0-32.011.0-13.02.0-3.0≤3,0≤3,0≤2,0≤1,0

2. Hot Hardness Data (Hardness vs. Temperature)

R30001 is renowned for maintaining its hardness at temperatures where standard steels soften significantly:

  • Température ambiante : 50 – 58 HRC
  • 400 °C (750 °F) : 42 HRC
  • 600°C (1110°F) : 37 HRC
  • 760°C (1400°F): 32 HRC
  • 870°C (1600°F): 28 HRC

3. Mechanical & Physical Constants

  • Densité: 8,69 g/cm³ (0,314 lb/po³)
  • Plage de fusion : 1248°C – 1290°C (2278°F – 2355°F)
  • Ultimate Tensile Strength (UTS): 550 MPa (80,000 psi)
  • Conductivité thermique: 14.5 W/m·K (at Room Temp)
  • Résistivité électrique: 94.0 μ-ohm·cm
  • Abrasion Resistance: Maximum (Highest carbide volume of the standard series)

4. Applications principales

Targeted at high-abrasion environments where toughness is secondary to wear life:

  • Manipulation des fluides : Pump sleeves, rotary seal rings, and expeller screws.
  • Fabrication: Bearing sleeves, wear pads, and centerless grinding work rests.
  • Industrial Machinery: Drawing blocks and screw presses.
  • Tooling: Specialized cutting edges for plastic and paper processing.

5. Fabrication & Machining Guidance

  • Welding & Hardfacing: Recommended for PTA (Arc transféré par plasma) and Laser Cladding. Due to high hardness, it is **crack-sensitive**. High preheat (500°C – 600°C) and slow cooling are essential to minimize stresses.
  • Usinage: Extremely difficult to machine. Conventional turning and milling are not recommended. It should only be finished by Diamond Grinding or EDM.

Référence croisée de l’industrie : UNS R30001 | Stellite 1 | AWS A5.13 ECoCr-C | ASM Co-128.
Data verified against ASM International Alloy Digest and SAE Unified Numbering System.