LCC-G RESEARCH & DEVELOPMENT

A new low temperature impact property Carbon/ Manganese Steel

So what does this mean for the Design Engineer?

Simply put, it means don’t expect the same mechanical properties in heavy sections as light sections in ferritic steel castings such as ASTM A352 Grade LCC

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Typical Properties where T=50mm tested at 1/4T

UTS0.2% ProofElongationRed of Area ImpactAvg Impacts
(N/mm2) (N/mm2) (%) (%) (Joules) (Joules)
485min275min 22min 35min 22min 27min
520305 25 62 44 | 47 | 52 48
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Typical Properties where T=250mm tested at 1/4T

UTS0.2% ProofElongation Red of Area Impact Avg Impacts
(N/mm2)(N/mm2) (%) (%) (Joules) (Joules)
485min 275min 22min 35min 22min 27min
497289 20 22 8 | 10 | 11 10

Many Ferritic Steel Castings are produced world wide with section sizes greater than 100mm, so how can the mechanical properties and design parameters be guaranteed in these components?

This is the reason for the development by Goodwin of the LCC-G Ferritic Steel grade.

The new LCC-G grade steel was developed to capture the full potential of the cast material, utilising optimised chemistry and processing parameters which now achieves through section mechanical properties that had not been previously possible.

Rip up the Rules with LCC-G

  • Vastly increased impact properties in heavy sections
  • Much improved heavy section material ductility
  • Improvements translating to actual product
  • Much greater levels of confidence and safety achieved for End Users

With LCC-G the low temperature impact resistance and tensile ductility do not dramatically decrease with increase in section size, but instead stay far more consistent throughout.

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50mm Test Block

1/2T Average Impacts: 163J at -50°C

1/2T Elongation: 38%

1/2T Reduction in Area: 78%

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250mm Test Block

1/2T Average Impacts: 145J at -50⁰C

1/2T Elongation: 34%

1/2T Reduction in Area: 76%

User benefit from unsurpassed low temperature impact properties using LCC-G, providing a level of brittle fracture mode failure not previous achievable with the LCC Grade.


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Why is Ductile Material Import for High Duty Applications?

...Ductile Material Retards Crack Propagation

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LCC-G

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NON LCC-G



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