50+ Proven Formulations for Every Heavy Industry Application

Hardfacing Flux-Cored Wires · Select by Industry & Application

Product System

Donghe Materials employs a scientific multi-layer hardfacing system, combining base, buffer, and surface layers to achieve optimal wear resistance and service life for each application.

Surface Layer (High Hardness)
HRC58-65, maximum wear resistance
Surface Layer (Medium Hardness)
HRC30-56, balanced hardness and toughness
Buffer/Transition Layer
Stress relief, prevents cracking and spalling
Base Layer
Excellent fusion bonding with substrate, ductile support
Core Products

Hardfacing Flux-Cored Wires

GMAW/FCAW (CO₂ or Ar/CO₂ shielding), φ1.2–φ3.2 available

Distributed Products

Hardfacing Electrodes

SMAW electrodes — contact us for details

Cement & Building Materials

High-stress abrasive wear combined with impact loading

VRM rollers and tables, HPGR tire surfaces, crusher hammers and liners

Model Diameter Layer Function Hardness Inquiry
DH4071 φ2.8 Base Layer HB220
DH4215 φ1.6 Buffer/Transition Layer HRC45
DH4225 φ1.2~1.6 Buffer/Transition Layer HRC55
DH4227S φ1.2~1.6 Buffer/Transition Layer HRC55
DH4399 φ2.8 Surface Layer (Medium Hardness) HRC55
DH4501 φ1.6 Surface Layer (Medium Hardness) HRC52
DH4502 φ1.6 Surface Layer (Medium Hardness) HRC60
DH4503 φ1.6 Surface Layer (Medium Hardness) —
DH4504 φ1.6 Surface Layer (Medium Hardness) —
DH4551 φ2.8 Surface Layer (Medium Hardness) HRC60
DH4552 φ2.8 Surface Layer (Medium Hardness) HRC55
DH4603 Popular φ1.6 Surface Layer (High Hardness) HRC60
DH4700 φ1.6 Surface Layer (High Hardness) HRC63
DH4745 φ1.6 Surface Layer (High Hardness) HRC60
DH4753 φ2.8 Surface Layer (High Hardness) HRC60
DH4870 φ2.8 Surface Layer (High Hardness) HRC65
Recommended Combinations
  • VRM / HPGR repair: DH0001 (base) → DH4215 (buffer) → DH4603 (surface)
  • Crusher hammer repair: DH0157 (buffer) → DH4700 (surface)

Steel & Metallurgy

Elevated temperature metal-to-metal wear with thermal fatigue

Work rolls, continuous caster rolls, backup rolls

Model Diameter Layer Function Hardness Inquiry
DH5335φ2.8~3.2Surface Layer (Medium Hardness)HB240~250
DH5422φ1.6Surface Layer (Medium Hardness)HRC45
DH5434 Recommendedφ3.2Surface Layer (Medium Hardness)HRC40~46
DH5434-Oφ2.8/2.4Surface Layer (Medium Hardness)HRC42
DH5435 Recommendedφ3.2Surface Layer (Medium Hardness)HRC45
DH5435Aφ3.2Surface Layer (Medium Hardness)HRC45
DH5530φ3.2Surface Layer (Medium Hardness)HRC38
DH5531φ3.2Surface Layer (Medium Hardness)HRC40
DH5532φ3.2Surface Layer (Medium Hardness)HRC42
DH5533φ3.2Surface Layer (Medium Hardness)HRC45
DH5534φ3.2Surface Layer (Medium Hardness)HRC48
DH5535φ3.2Surface Layer (Medium Hardness)HRC50
DH5536φ3.2Surface Layer (Medium Hardness)HRC52
DH5540φ3.2Surface Layer (Medium Hardness)HRC46
DH5541φ3.2Surface Layer (Medium Hardness)HRC46
DH5543φ3.2Surface Layer (Medium Hardness)HRC55
DH5543Aφ3.2Surface Layer (Medium Hardness)HRC56
DH5544φ3.2Surface Layer (Medium Hardness)HRC54
DH5662φ2.8Surface Layer (High Hardness)HRC60
DH5754φ2.8Surface Layer (High Hardness)HRC60
DH5755φ2.8Surface Layer (High Hardness)HRC60
Recommended Combinations
  • Caster roll repair: DH5434 (HRC42) or DH5435 (HRC45)
  • Mill roll repair: DH5530–DH5536 series, select by target hardness

Hot Forging Dies

High temperature + high impact + thermal fatigue cycling

Hot forging die surfaces, die edges, press dies

Model Diameter Layer Function Hardness Inquiry
DH2235φ2.4Buffer/Transition LayerHRC32
DH2302φ1.6Surface Layer (Medium Hardness)HRC39
DH2305φ1.6Surface Layer (Medium Hardness)HRC42
DH2345 Recommendedφ2.4Surface Layer (Medium Hardness)HRC42
DH2405φ1.6Surface Layer (Medium Hardness)HRC50
DH2415φ1.6Surface Layer (Medium Hardness)HRC47
DH2445φ2.4Surface Layer (Medium Hardness)HRC50
DH2515φ1.6Surface Layer (Medium Hardness)HRC56
DH2545φ2.4Surface Layer (Medium Hardness)HRC53
Recommended Combinations
  • Medium-duty dies: DH2235 (buffer) → DH2345 (surface HRC42)
  • Heavy-duty dies: DH2235 (buffer) → DH2545 (surface HRC53)

Construction Equipment

High-impact gouging abrasion

Dozer cutting edges, loader bucket teeth, excavator bucket wear plates

Model Diameter Layer Function Hardness Inquiry
DH6650 Recommendedφ2.8Surface Layer (High Hardness)HRC60
DH6651φ2.8Surface Layer (High Hardness)HRC60
DH6653φ2.8Surface Layer (High Hardness)HRC60
DH6661φ2.8Surface Layer (High Hardness)HRC65
DH6671φ2.8Surface Layer (High Hardness)HRC60
DH6672φ2.8Surface Layer (High Hardness)HRC60
Recommended Combinations
  • Bucket walls / cutting edges: DH6650 or DH6651 (HRC60)
  • Maximum wear resistance: DH6661 (HRC65)

General Purpose Base/Buffer Layers

Foundation wires for all industries, providing reliable support for surface layers

Base and buffer layers for all hardfacing applications

Model Diameter Layer Function Hardness Inquiry
DH0001 Popularφ1.6/1.2Base Layer—
DH0157φ1.6/1.2Buffer/Transition LayerHRC30
DH0160φ1.6Buffer/Transition LayerHRC38
DH0180φ1.6/1.2Buffer/Transition Layer—
Usage Guide
  • Base layer: DH0001 — excellent fusion with carbon/low-alloy steel substrates
  • Buffer layer: DH0157 (HRC30), DH0160 (HRC38), DH0180 — select by hardness gradient

Why Choose Donghe

30 Years of Formulation Expertise

Core team from industry pioneers, 50+ proven alloy formulations

University R&D Partnership

Long-term collaboration with Central South University for continuous innovation

Comprehensive Quality Control

OES, hardness testing, metallographic analysis — every batch verified

48-Hour Response

Submit your application details, receive expert recommendations within 48 hours

Not Sure Which Wire Fits Your Application?

Submit your application details and our engineers will provide customized recommendations within 48 hours

48-Hour Response Free Technical Support Custom Solutions