A higher level of strength

CPDUR1000 [1.7734/15CDV6] is chromium-molybdenum-vanadium structural steel. The material has good bending performance and excellent weldability, combined with toughness, consistency and resistance to fatigue derived from the high level of micro-cleanliness.


The material CPDUR1000 [1,7734/15CDV6] is easy to work with owing to its technical capabilities and mechanical properties: a high strength steel with excellent bending workability. Cold-drawn tubes made of CPDUR1000 [1,7734/15CDV6], for example, are characterised by high yield strength and excellent weldability: They can be easily welded without heat pre- or post-treatment, resulting in significantly easier and shorter processing times, and are particularly suitable for use in sophisticated structures.
Higher tensile strength allows for thinner tube walls which, for example, have superior weight advantages. The material is therefore perfectly suited for the manufacture of parts and components for sectors with the highest quality and safety standards, while at the same time reducing weight: automotive, motor sports or even aviation. For these and other fields of application, CPDUR1000 [1.7734/15CDV6] is available in grain size 5 or finer (to EN 103-71). Due to its excellent mechanical properties, CPDUR1000 [1.7734/15CDV6] meets the highest international quality and safety standards

Its Special Properties Ensure First-rate Quality

  • High yield strength and excellent welding properties
  • Weldable in both conditions (.4/.5) without heat treatment
  • Very strong around the welded joint without additional hardening (Rm > 980 N/mm2)
  • Tubes demagnetised up to a residual field intensity of max. 12 A/cm.
  • Material standard: CPDUR1000 [1.7734] according to LN 9369 and DIN 29657 / CPDUR1000 [15CDV6] according to AIR 9160/C


Material number Tensile strength Yield strength
RM (min.)
N/mm2 (MPa)
RM (min.)
N/mm2 (MPa)
CPDUR1000 1.7734.4/15CDV6 700 550
CPDUR1000 1.7734.5/15CDV6 980-1180 790
For comparison: SAE 4130
1.7214 (SAE4130) 650-850 480-520