3 Fundamentals of press design

Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998
Table 4.1.2: Die materials and applications
Die material No. 1.0046 1.0555 1.7140 1.2067 1.2769 1.2601 1.2363
Designation
(DIN 16006)
GS-45 GS-62 GS-47 Cr Mn 6 G-100 Cr 6 G-45 Cr Ni Mo 42 G-X 165 Cr Mo V 12 G-X 100 Cr Mo V 51
Rm [N/mm2 ] 450 620 tempered, stress relieved 850 tempered to 800-900 800-900
820-930 1000-1030
Heat weldable, hardening weldable hardenable surface hardenable, hardenable hardenable
treatment not hardenable conditionally possible surface hardenable glow nitrided
Hardness – max. HRC 56 + 2 HRC 56 + 2 HCR 60 + 2 working hardness HRC 60+/–2 HRC 60+/–2
after heat
treatment
3 mm deep HRC 50+/–2
Application thin-walled blank holders, forming punch, forming punch, forming punches, blanking strips, blanking strips,
blank holders, upper structures blanking segments, female die inserts, female die inserts, blanking punches, blanking punches,
upper structures subject to female blanking dies forming blocks, forming blocks, coining punches, coining punches,
and substructures high loads counterpressure blank holders and draw punches, draw punches,
for small dies pads retainers with female drawing dies, female drawing dies,
end pressure forming punches forming punches
Die material No. 1.2379 0.6025 0.6025 Cr Mo 0.7050 0.7060 0.7070 0.7070 L
Designation
(DIN 16006)
G-X 155 Cr V Mo 12 1 GG-25 GG-25 Cr Mo GGG-50 GGG-60 GGG-70 GGG-70 L
Basic hardness HB max. 250 160-230 200-230 170-220 190-240 220-270 220-270
Rm [N/mm2 ] 860 250-350 250 500 600 700 700
Heat hardenable, conditionally weldable, surface hardening, surface hardening, conditionally weldable, conditionally weldable, surface hardening,
treatment TIC-TIN coating glow nitriding glow nitriding temperable surface hardening, surface hardening, glow nitriding
glow nitriding glow nitriding
Hardness
after heat
treatment
HRC 60 + 2 approx. 1200-1400 HV2 approx. 53 HRC approx. 54 HRC approx. 56 HRC approx. 56 HRC approx. 56 HRC
Application hemming blocks, standard material for blank holders, instead of GG 25 blank holders, blank holders, blank holders for parts
edge bending blocks, cast die components, draw punches, and GS 45 draw punches female drawing dies with drawing depths
coining punches for blank holders adapters, female drawing dies with thin-walled materials female drawing dies, > 120 mm of outer
sheet metals up to upper structures and in particular in case of brackets bodywork parts on
2,9mm, blanking cutters, substructures, compressive stress, transfer presses
bottom blanking dies, mounted parts, e.g. counterpressure pads
blanking punches drives, slides and strippers
Principles of die manufacture
145