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How to determine K of bolts (AD-MERK Code)

How to determine K of bolts (AD-MERK Code)

How to determine K of bolts (AD-MERK Code)

(OP)
Dears Colleagues:

I have designed a flange in accordance with Admerkblatter Code (German Code) and I'm trying to use ASTM Bolts material (A-193 Gr B7) , Could any body explain me , which is the formula to determine K for Bolts in this Code. I'm using BJAC Software but the program don't recognize this material and request its properties at design temperatures, to finish the calculations.

K in the majorities of cases is equal to yield Strenght at design temp. and K20 same at ambient temp. . But is obviously that special consideration may be used to determine allowable design value or coefficient
Could any tall me his experience?

Thanks

Calidad from Spain.

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