VAUTID W78A

VAUTID W78А

For components over 40 mm thick that are subject to impact and abrasion

With a very high proportion of chrome carbides embedded in an extremely stable matrix, VAUTID W78A produces castings which achieve a long service life, even under extreme conditions. VAUTID W78A has proved ideal in situations where severe impact is combined with highly abrasive media.

Recommended applications:

  • Cast components that are exposed to temperatures up to 400°C.
  • Components that are subjected to very severe abrasion and significant impact g. hammers, impact heads, chisels, and beater bars.

Mechanical properties
VAUTID use white cast iron materials produced to DIN EN 12513 grades GJN-HV520 – 5.5602 and GJN-HV600(XCr18) – 5.5609 for components exposed to abrasion or to a combination of abrasion and impact. Materials developed in-house by VAUTID are used in impact mills, crushers and conveyor units, commonly installed in recycling plants, asphalt works or power generation plants. Typical components include lining elements, mixer tools, pump parts, hammers and beater bars. VAUTID materials VAUTID W7, VAUTID W72 and VAUTID W72H can all be machined.

VAUTID material Tensile strengt [hN/mm²] Crushing strenght [N/mm²] Elastic modulus
[kN/mm²]
Hardness HB
[HRC]
Fracture toughness KIC [kN/mm²]
GJN-HV520 – 5.5602
(similar to Ni-Hard 1)1
approx. 52
GJN-HV600(XCr18) – 5.5609
(similar to Ni-Hard 4)2
approx. 55
VAUTID W31 450 – 800 620 – 750 165 – 180 approx. 58
VAUTID W41 450 – 800 620 – 750 165 – 180 approx. 52
VAUTID W73 600 – 1.000 2.800 – 3.200 158 – 190 approx. 59 25 – 31
VAUTID W723 600 – 1.000 2.800 – 3.200 158 – 190 approx. 59 25 – 31
VAUTID W72H3 600 – 1.000 2.800 – 3.200 158 – 190 approx. 59 25 – 31
VAUTID W733 600 – 1.000 2.800 – 3.200 158 – 190 approx. 59 25 – 31
VAUTID W78A3 600 – 1.000 2.800 – 3.200 158 – 190 approx. 62
VAUTID W1001 450 – 800 1.800 – 2.800 150 – 170 approx. 59 25 – 31

Condition of delivery: 1 G; 2 G/hardened; 3 hardened

Alloy
Typical microstructure VAUTID wear plate W78A

Carbides
Chromium carbides Cr7C3 2200 HV1

Typical microstructure VAUTID W78A
1 Carbide hardness is specified in the [HV] unit (Vickers hardness).

Downloads
VAUTID material profile:
VAUTID GUSS Guss-Produkte/Cast products
VAUTID Cast products
VAUTID material profile

Expert advice

For comprehensive technical advice with a personal touch, get in touch with VAUTID:

Sales Shanghai
Phone:+86 21 64824300
shanghai@vautid-group.com