HS 6(Co-Cr-W-Mo)

1. Introduce

– HS-6 : Abbreviation for Haynes Stellite 6

– Cast Co-based alloy

– Most widely used of the wear-resistant cobalt-based alloys

– Maintains an adequate level of hardness up to 500

– UNS R30006, R30106, W73006, W73036

* Stellite Alloys

1. A Co-Cr alloy designed for wear resistance
2. Alloys with Cr, C, W, Mo, etc. added to a Co base
3. Excellent corrosion, erosion, and wear resistance
   → Cause : Intrinsic properties of hard carbide phase dispersed in the CoCr alloy base

* UNS

1. Abbreviation for Unified Numbering Systems for Metals and Alloys
2. Unified unique numbering system for metals and alloys
3. A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.

* R : Reactive and Refractory Metals and Alloys

* UNS R30006, R30106 : 3XXXX : Cobalt

* W : Welding Filler Metals Classified by Weld Deposit

* UNS W73006, W73036 : 7XXXX : Surfacing Alloys

2. Property

– High temperature wear resistance, heat resistance, abrasion resistance, corrosion resistance, high strength, oxidation resistance, good corrosion resistance

[HS 6 Chemical Composition (%)]

[HS 6 Mechanical Properties]

[HS 6 Physical Properties]

3. Standard & Specification

– Specification : UNS R30006, R30106, W73006, W73036

4. Available Form

– Rod, Bar

– Wire, Coil

– Plate, Sheet

5. Application & Product

– Aerospace, Chemical, Petroleum, Automotive, Medical

(1) Bearings for steam turbines / (2) Chemical processing equipment accessories / (3) Drill bits for drilling / (4) Automotive turbochargers