Die Steels - Buderus Edelstahl Gmbh

Material characteristic Important material data
Ni alloy die steel with good toughness in the hardness range
1100 - 1 00 N/mm =^ 5 - 85 HB
As 71 ISO-B, but with higher hardness retention and better through hardening
properties for hardnesses up to around 15 HB
Optimized composition for significantly improved through hardening, tempering
properties, thermal strength characteristics and increased wear resistance
compared to 71 ISO-B for large forging dies and press dies
As 71 ISO-B, but higher heat resistance, hardness retention
and wear resistance
Air quenching, very tough die steel for dynamic stress with short contact
times, can be used even for very large dies
Hot working steel with high heat resistance, hardness retention
and wear resistance
As ISO-B, but even better hardness retention and wear resistance, highly
temperature resistant, good nitriding qualities
Hot working steel with good toughness, suitable for high temperature stress
and alternating stress, tolerates water cooling
As ISO-B, but greater heat resistance and hardness retention,
high thermal endurance, good wear resistance
Hot working steel with very good heat resistance, high hardness retention and
good toughness, can be water cooled to a limited extent
Hammer head, 22 tonnes unit weight
Ac 1 Ac Ms Hardening
temperature
°C °C °C °C °C
Annealing
temperature
705 780 50 880 90 ,5
710 790 70 880 90 ,5
710 790 80 880 700 ,8
7 0 770 10 880 700 5,0
95 770 10 880 50 ,0
855 9 5 00 10 0 8 0 7,0
8 951 0 1080 8 0 5,0
790 875 50 10 0 780 ,0
785 985 0 10 0 780 ,8
810 885 00 10 0 800 8,0
Thermal conductivity
W
mK at 500 °C
Die holder
with inserts
11