Induction Hardening

With induction hardening, the edge of a workpiece is heated quickly and then quenched by the plant (hardened). Long cylindrical components can be hardened inductively using our medium-frequency hardening system (hardening length of up to 5,000 mm).

Advantages

  • High surface hardness, tough core
  • Improves resistance to wear and tear
  • Partial hardening
  • High reproducibility

Materials

  • Tempered steels
  • Tool steels
  • Stainless steels
  • Casting materials

Available plant sizes

  • Plant MF, length 5000 mm, diameter 600 mm
Induction Hardening

Typical Values for Induction Hardening

Which materials can be hardened inductively and what hardness is achieved? The table shows commonly used steel grades and cast materials for induction hardening as well as the achievable case hardening depth and surface hardness.

DIN EN 10027-2 Material number DIN EN 10027-2 (Short) designation Edge hardness [HRC] max. Case depth SHD [mm]
Tempered steel
1.1181 C 35 E 48-55 6
1.1191 C 45 E 54-61 6
1.1221 C 60 E 57-64 6
1.5067 36Mn5 51-57 6
1.5122 37MnSi* 53-58 6
1.5141 53MnSi* 56-62 6
1.7005 45Cr2 54-60 6
1.7033 34Cr4 49-56 6
1.7220 34CrMo4 50-57 6
1.7225 / 1.7227 42CrMo4 / 42CrMoS4 52-59 6
1.6580 30CrNiMo8 48-55 6
1.6582 34CrNiMo6 49-56 6
1.8159 50CrV4 55-62 6
1.8161 58CrV4 57-63 6
Tool steel
1.2344 X41CrMoV5.1 53-60 6
1.2327 86CrMoV7 58-64 6
1.2080 X210Cr12 54-60 6
1.2083 X40Cr13 54-57 6
Stainless steel
1.4112 X90CrMoV18 54-57 6
1.4535 X90CrCoMoV17 54-57 6
1.4125 X105CrMo17 55-60 6
Ball bearing steel
1.3505 100Cr6 60-65 6
Valve steel
1.4718 X45CrSi9 3 55-60 2
1.4747 X80CrNiSi20 51-55 2
Casting materials
0.6025 EN-GJL-250 (GG25) 46-52 2
0.7050 EN-GJS-500 (GGG50) 52-57 2
0.7080 EN-GJS-600 (GGG60) 52-58 2
0.7070 EN-GJS-700 (GGG70) 55-62 2

* Malleable, but susceptible to cracking. The maximum hardness is determined by the material. All statements without guarantee.

Downloads

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Material characteristics induction hardening (PDF)