Impact Factor & Ranking

3.0 2.25 1.5 0.75 2.004 2017 2018 2019 2020 2021 2.004 2017 2018 2019 2020 2021
  • 1 146
    #89
  • 1 285
    #149
  • 1 75
    #17
  • 1 59
    #24
  • 1 148
    #72
  • 1 293
    #125
  • 1 76
    #13
  • 1 60
    #14
  • 1 159
    #109
  • 1 314
    #201
  • 1 79
    #25
  • 1 61
    #31
  • 1 162
    #124
  • 1 333
    #243
  • 1 80
    #31
  • 1 60
    #38
  • 1 163
    #131
  • 1 345
    #259
  • 1 79
    #35
  • 1 63
    #42

About Impact Factor & Ranking

Measure of the number of times an average paper in this journal is cited. Copyright Clarivate Analytics.

Metrics

Year I.F. Chemistry, physical Materials science, multidisciplinary Metallurgy & metallurgical engineering Thermodynamics
2021 2.004 131/163 259/345 35/79 42/63
2020 2.017 124/162 243/333 31/80 38/60
2019 1.947 109/159 201/314 25/79 31/61
2018 2.652 72/148 125/293 13/76 14/60
2017 1.935 89/146 149/285 17/75 24/59

Definition

Impact Factor

The Journal Impact Factor is published each year by Clarivate Analytics. It is a measure of the number of times an average paper in a particular journal is cited during the preceding two years.
For example:

A = the number of times articles published in a specific journal in 2014 and 2015 were cited by journals during 2016.
B = the total number of 'citable items' published by that journal in 2014 and 2015. ('Citable items' are usually articles, reviews, proceedings, etc.; not editorials or letters-to-the-editor.)

2016 impact factor = A/B.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.

other metrics in impact