High-strength alloy bar for heavy-duty shafts and fatigue-critical parts.

34CrNiMo6 is known for excellent toughness and fatigue resistance, making it a practical choice for very demanding mechanical parts.

34CrNiMo6 steel bars in factory storage
Key pointBuilt for high load-bearing capacity and reliable service.

Well suited to large shafts, gear shafts, and heavy machinery.

High-strength alloy steel for demanding industrial machinery.

The normalized content keeps the same technical intent as the source note while presenting it in a buyer-friendly format.

Introduction

34CrNiMo6 (EN 1.6582) is a high-strength alloy steel known for excellent toughness and fatigue resistance. It is widely used in heavy-duty mechanical components requiring high load-bearing capacity.

Equivalent grades
EN34CrNiMo6 / 1.6582
ASTM4340
GB34CrNiMo6
Chemical composition
C0.30 - 0.38
Si0.15 - 0.40
Mn0.50 - 0.80
Cr1.30 - 1.70
Ni1.30 - 1.70
Mo0.15 - 0.30
Mechanical properties
Tensile strength900 - 1100 MPa
Yield strength≥ 750 MPa
Specifications
Diameter20 - 400 mm
Length3 - 12 m
ConditionQT
Applications
  • Heavy duty shafts
  • Gear shafts
  • Oil & gas equipment
  • Mining machinery components
Manufacturing options
  • QT delivery support
  • Forged or hot rolled supply
  • Rough machining and precision machining
  • Surface treatment on request
Inspection points
  • Chemical analysis
  • Mechanical testing
  • UT inspection
  • Dimensional review

Need 34CrNiMo6 for a heavy-duty project?

Send your part type and target condition and we will match the supply route.