Kiswel KM-350

KISWEL KM-350 is a specialized hardfacing electrode designed to combat severe metal-to-metal wear and abrasion. Classified under KS D 7035 (DF2A-350-B) and JIS Z 3251 (DF2A-350-B),

PRODUCT SPECIFICATION

KISWEL Hardfacing Electrode

KM-350 Hardfacing Welding Electrode

Special Purpose Electrode for Metal-to-Metal Wear Resistance

Product Overview

The KISWEL KM-350 is a specialized hardfacing electrode designed to combat severe metal-to-metal wear and abrasion. Classified under KS D 7035 (DF2A-350-B) and JIS Z 3251 (DF2A-350-B), it is engineered for applications requiring high surface durability. The deposited weld metal provides excellent resistance against friction, making it ideal for rebuilding and extending the service life of heavy industrial components.

Core Specifications

• Classification: KS D 7035: DF2A-350-B / JIS Z 3251: DF2A-350-B
• Polarity: AC / DC (+)
• Welding Positions: Flat (F), Horizontal Fillet (HF)
• Applications: Hardfacing of rollers, steel mill shafts, sprockets, tracks, and crane wheels.

Typical Deposit Characteristics

Typical Hardness

300 - 400 HB

(As welded)

Machinability

Good

Machineable with tools

Weld Metal Structure

Martensite Structure

Provides high toughness and crack resistance under heavy rolling loads.

Standard Sizes & Operating Guidelines

• Available Sizes: Standard diameters typically range from 3.2 mm to 6.0 mm.

• Electrode Redrying: Redry the electrodes at 300～350°C for 60 minutes prior to use to prevent moisture-related defects.

• Preheating: Preheating base metals (typically 100°C–250°C depending on carbon equivalent and thickness) is recommended to prevent cracking on high-stress parts.

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