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Steel Forming and Heat Treating Handbook - Antonio Gorni On Line

Steel Forming and Heat Treating Handbook - Antonio Gorni On Line

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<strong>Gorni</strong><br />

Alloy Content: [weight %]<br />

<strong>Steel</strong> <strong>Forming</strong> <strong>and</strong> <strong>Heat</strong> <strong>Treating</strong> H<strong>and</strong>book<br />

2<br />

Observations:<br />

- Both formulas were proposed by ELDIS for low alloy steels with less than 0.6%C.<br />

Source: BARRALIS, J. & MAEDER, G. Métallurgie Tome I: Métallurgie Physique. Collection Scientifique ENSAM,<br />

1982, 270 p.<br />

. Grange<br />

Ae1 1333 25 Mn 40 Si 42 Cr 26 Ni<br />

Ae3 1570 323 C 25 Mn 80 Si 3 Cr 32 Ni<br />

Notation:<br />

Ae1: Lower Equilibrium Temperature Between Ferrite <strong>and</strong> Austenite [°F]<br />

Ae3: Upper Equilibrium Temperature Between Ferrite <strong>and</strong> Austenite [°F]<br />

Alloy Content: [weight %]<br />

Source: GRANGE, R.A. Estimating Critical Ranges in <strong>Heat</strong> Treatment of <strong>Steel</strong>s. Metal Progress, 70:4, April 1961, 73-75.<br />

. Hougardy<br />

Ac 739 22 C 7 Mn 2 Si 14 Cr 13 Mo 13 Ni<br />

1<br />

<br />

Ac 902 255 C 11<br />

Mn 19 Si 5 Cr 13 Mo 20 Ni 55V<br />

3<br />

<br />

Notation:<br />

Ac1: Lower Temperature of the Ferrite-Austenite Field During <strong>Heat</strong>ing [°C]

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