Circular steel drawn h9 diameter 4 mm 1.2210 - 115CrV3 - 19 421

Typical chemical composition (wt.%)
(ranges may vary slightly depending on the producer/standard)

• C: 1.10 – 1.25

• Si: 0.15 – 0.30

• Mn: 0.20 – 0.40

• Cr: 0.50 – 0.80

• V: 0.07 – 0.12

• P, S: max. approx. 0.03 / 0.03

Delivery condition

Usually supplied soft annealed, typical hardness max. ~220 HB.

Heat treatment (overview)

Soft annealing

Approx. 710 – 740/750 °C, holding time 2–5 h, slow furnace cooling (controlled) → max. ~220 HB.

Stress relieving

Approx. 600 – 650 °C, then cooling (typically in furnace / in air depending on the process).

Hardening

Austenitizing approx. 780 – 840 °C, followed by quenching in oil or water.
Achievable hardness after hardening is typically ~64 – 66 HRC.

Tempering

Typically 100 – 400 °C (depending on the required hardness/toughness).

Indicative values (hardness after hardening + tempering):

• 200 °C: >62 HRC

• 300 °C: ~60 HRC

• 400 °C: ~54 HRC

• 500 °C: ~46 HRC