Stellite 6 Cobalt Base Casting Rod RCoCr-A - 2.7mm/3.2mm/4.0mm Diameter High Temperature Surfacing Welding Wire

Price Negotiable

Price: As Per Quotation

MOQ: Not limited

Delivery Time: 25-35 days

Brand: ZHEMU

Product Description

Product Overview

Stellite 6 Cobalt Base Casting Rod RCoCr-A is a premium cobalt alloy welding wire designed for high-temperature surfacing applications requiring exceptional wear resistance, corrosion resistance, and durability.

Technical Specifications

Available Sizes

Diameter: 2.7mm, 3.2mm, 4.0mm | Length: 1000mm

Certification Standard

AWS A5.21:2001 ERCoCr-A

Chemical Composition (%)

C	Cr	Ni	Fe	W	Co
0.9-1.4	26-32	max 3.0	max 3.0	3.0-6.0	Remainder

Mechanical Properties

Tensile Strength (MPa)	Room Temp Hardness (HRC)	500°C Hardness (Hv)	600°C Hardness (Hv)	700°C Hardness (Hv)	800°C Hardness (Hv)
800	40-45	365	340	274	250

Key Features & Benefits

Excellent corrosion resistance and high temperature performance up to 800°C
Superior wear resistance and impact resistance in harsh environments
Good machinability after welding process
Outstanding cavitation erosion resistance in marine applications
Moderate carbon and tungsten content for optimal toughness

Applications

Automotive and internal combustion engine valves
High temperature and high pressure valves
Hot shear blades and hot forging dies
Bearing inner and outer ring surfacing
Marine components requiring durability in harsh conditions

Welding Instructions

Compatible with oxygen-acetylene gas welding or argon tungsten arc welding
Use carbonization flame for gas welding with 1:3 flame core to internal flame ratio
Preheat base material according to type and workpiece size
Weld until base material shows "sweating" state without melting
Post-weld slow cooling in preheated sand or ash to prevent cracking
Surface preparation and rounded corners required before welding

Performance Comparison

Stellite 6 demonstrates superior wear resistance compared to aluminium bronze and stainless steels, making it ideal for high-wear, high-temperature, and erosive marine environments where durability and longevity are critical.