is there a Japanese to Euro conversion chart for rubber hardness?

[FrenchFrog33]

I have a difficult time understanding the rubber hardness of Butterfly rubbers. Is there a conversion chart? Or can someone break down the rubber hardness of some of the popular Butterfly rubbers?

 

[ricospin]

Correct me if I’m wrong but I think it’s been said before that Butterfly uses DHS scale.

 

[lodro]

DIGNICS 05
I am surprised

Sponge hardness	40

 

[TensorBackhand]

Correct me if I’m wrong but I think it’s been said before that Butterfly uses DHS scale.

No that doesnt make sense to me. Dignics is 40 hardness, but that would be 50 ESN i think.

H3 40d would be like 55d esn i think.

 

[lodro]

No that doesnt make sense to me. Dignics is 40 hardness, but that would be 50 ESN i think.

H3 40d would be like 55d esn i think.

Yes, that sounds correct to me.
I have very limited insight into the "rubber-world" but could not help thinking that with both Tenergy and Dignics Butterfly always kept adding a hard version and the Chinese went the other way by boosting the living Bejeises out of their bricks to make them softer 😂

 

[thomas.pong]

Roughly add 10 to get the Euro scale (give or take 1 degree)

 

[Tiz]

 

[igorponger]

Yeah, we have got a convincing proof by making tests on a variety of rubbers. Shore O would be always correlated to Shore A + 10 on average.
Japanese as well as Chinese manufactories using Shore A scale, while ESN using Shore O.