Steel Properties Calculator ABC Steel ©

Yesterday I finished coding a «steel calculator» for cellphones with Android OS. I called it «ABC Steel», which is short for «Android Based Calculator of Steel Properties». I dropped out the word «properties» in the acronym, for if I `d let it stay there I`d get «ABCSteel Pro» which would be similar to the name «JMatPro» (Java-based Materials Properties), which already exists and is very familiar. So, finally I share my first brand new Android-app. Hooray!

ABCSteel

By the way, after the adoption of a shortened abbreviation (i.e. without the word «Properties») the slogan was born: «Steel — simple as ABC book» 🙂

And now lets talk about the current capabilities of the program. Steel properties calculator ABC Steel is written in Java and partially duplicates the «Steel Calculator», written by me earlier in JavaScript and shared on the page http://metallovedeniye.ru/rascheti/steel-calc.html .

ABC Steel is able to carry out calculations of

  • melting point of steel, Tliq;
  • Ac1 and Ac3 temperatures;
  • martensite start temperature, Ms;
  • carbon equivalent, Ce (two formulas have been used);
  • nitrogen equivalent, Neq;
  • manganese equivalent, Mneq
  • hardness of martensite in HRC.

Formulas implemented in the application are listed below:

Formula Note
1536- (78C + 7.6Si + 4.9Mn + 34P + 30S + 5Cu + 3.1Ni + 1.3Cr + 3.6Al + 2Mo + 2V + 18Ti) «Liquidus» temperature in °C. [1]
 Ac3 = 912 — 370 C — 27.4 Mn + 27.3 Si — 6.35 Cr — 32.7 Ni + 95.2 V + 190 Ti + 72.0 Al + 64.5 Nb + 5.57 W + 332 S + 276 P + 485 N — 900 B + 16.2 CMn + 32.3 CSi + 15.4 CCr + 48.0 CNi + 4.32 SiCr — 17.3 SiMo — 18.6 SiNi + 4.80 MnNi + 40.5 MoV + 174 C² + 2.46 Mn² — 6.86 Si² + 0.322 Cr² + 9.90 Mo² + 1.24 Ni² + 60.2V² In °C. Formulas were derived for the following range of chemical composition: C ≤ 0.83%, Mn ≤ 2.0%, Si ≤ 1.0%, Cr ≤ 2.0%, Mo ≤ 1.0%, Ni ≤ 3.0%, V ≤ 0.5%, W ≤ 1.0%, Ti ≤ 0.15%, Al ≤ 0.2%, Cu ≤ 1.0%, Nb ≤ 0.20%, P ≤ 0.040%, S≤ 0.040%, N ≤ 0.025%, B ≤ 0.010%.Источник — [2].
 Ac1 = 723 — 7.08 Mn + 37.7 Si + 18.1 Cr + 44.2 Mo + 8.95 Ni + 50.1 V + 21.7 Al + 3.18 W + 297 S — 830 N — 11.5 CSi — 14.0 MnSi — 3.10 SiCr — 57.9 CMo — 15.5 MnMo — 5.28 CNi — 6.0 MnNi + 6.77 SiNi — 0.80 CrNi + 27.4 CV + 30.8 MoV — 0.84Cr² — 3.46 Mo² — 0.46 Ni² — 28 V² Please see above [2]
Ms = 539 — 423C -30.4Mn — 17.7Ni — 12.1Cr — 11Si — 7Mo In °С. [3]
Ce = C + Mn/6 + Si/24 + Cr/5 + Ni/40 + Cu/13 + V/14 + P/2 GOST 19281 [4]
Ceq = C + Mn/6 +(Cr+Mo+V)/5 + (Ni+Cu)/15 EN10025-1 [5]
Neq = 0.8 (0.52Al + 0.29Ti + 0.15Nb) GOST 19281 [4]
Mneq = 0.3Cr + 0.5Ni + 0.7Cu GOST 4543, GOST 14959 [6, 7]
HRCm=33,087+50,723*C +33,662*C² -2,7048*C³ -107,02*C⁴+43,523*C⁵ Hardness of a structure containing 100% of martensite [8]

 

Here is the link for downloading ABC Steel from GooglePlay:


Get it on Google Play

ABC Steel © Max Terentyev, 2015—2016

References

1. Guthmann, K. Günstige Giesstemperatur im Vergleich zum Erstarrungspunkt von Eisen- und Stahlschmelzen // Stahl und Eisen, 71 (1951), 8, pp. 399-402.

2. Kasatkin, O.G. et al. Calculation Models for Determining the Critical Points of Steel. Metal Science and Heat Treatment, 26:1-2, January-February 1984, 27-31.

3. Andrews, K.W. Empirical Formulae for the Calculation of Some Transformation Temperatures // Journal of the Iron and Steel Institute, 203, Part 7, 1965, pp. 721-727.

4. GOST 19281-89 High strength rolled steel. General specification

5. EN10025-1 Hot rolled products of structural steels. General technical delivery conditions

6. GOST 4543-71 Structural alloy steel bars. Specifications

7. GOST 14959-79 Spring carbon and alloy steel bars. Specifications

8. ASTM A255 − 10 (2014) Standard Test Methods for Determining Hardenability of Steel

P.S. I`m waiting for your comments on the ABC Steel operation.

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Рубрика: Simulation. Метки: . Добавьте постоянную ссылку на эту страницу в закладки.

2 отзывов на Steel Properties Calculator ABC Steel ©

  1. kuntal bhattacharjya пишет:

    I need hardenability apps

  2. mxadmin пишет:

    I`m developing one right now. Soon it will be ready... and not free 😉

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