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BÖHLER K110
COLD WORK STEELSAvailable Product Shapes
Product Description
High-duty cutting tools (dies and punches), blanking and punching tools, woodworking tools, shear blades for cutting light-gauge material, thread rolling tools, tools for drawing, deep drawing and cold extrusion, pressing tools for the ceramics and pharmaceutical industries, cold rolls (working rolls) for multiple-roll stands, measuring instruments and gauges, small moulds for the plastics industry where excellent wear resistance is required.
Properties
Dimensionally stable, high carbon, high-chromium (12%) steel. Particularly suitable for air hardening. Good toughness.
Applications
Chemical composition
C Si Mn Cr Mo V
1.55 0.30 0.30 11.30 0.75 0.75
Flat Bar Ground Flat Long Products Open Die Forgings Plates
Round Bar Round Ground Bar
Machine knife (for producers) Rolling Cold Forming
Coining Fine Blanking, Stamping, Blanking Powder Pressing
Standard Parts (Molds, Plates, Pins, Punches) Screws and Barrels Components for Recycling Industry
Comps. for Equip. Below Ground (Boring, Shafts, etc.) Rolls Wear parts
General Components for Mechanical Engineering Thread rolling
Material designation
1.2379 SEL
~T30402 UNS
X153CrMoV12 EN
D2 AISI
Standards
4957 EN ISO
voestalpine BÖHLER Edelstahl GmbH & Co KGwww.voestalpine.com/bohler-edelstahl
COLD WORK STEELS BÖHLER K110
Material characteristics
Compressive strength
Dimensional stability during heat treatment
Toughness Wear resistance abrasive
Wear resistance adhesive
Delivery condition
Annealed
Hardness max. 250 HB
Heat treatment
Annealing
Temperature (°C / °F)
800 / 1472 - 850 / 1562
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.
Stress relieving
Temperature (°C / °F)
650 / 1202 - 700 / 1292
Slow cooling in furnace. Intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 to 2 hours.
Hardening and Tempering
Temperature (°C / °F)
1030 / 1886 - 1070 / 1958
Complex shapes / air, simple shapes / air blast, oil, salt bath from (220 to 250°C or 500 to 550°C) or gas. Holding time after temperature equalization: 15 to 30 minutes. After hardening, tempering to the desired working hardness, see tempering chart.
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voestalpine BÖHLER Edelstahl GmbH & Co KGwww.voestalpine.com/bohler-edelstahl
COLD WORK STEELS BÖHLER K110
Tempering chart
Continuous cooling CCT curves
Tempering:
Hardening temperature:━━━━━ 1030°C / 1886°F- - - - - - 1070°C / 1958°F
Austenitising temperature: 1080°C / 1976°FHolding time: 30 minutes
◯ Hardness in HV2...100 phase percentages0,40...59,8 cooling parameters, i. e. Cooling from 800 - 500°C (1472 - 932°F) in s x 10⁻²2...1 K/min cooling rate in K/min in the 800 - 500°C (1472 - 932°F) rangeRange of grain boundary martensite formationKgM... Grain boundary martensite
voestalpine BÖHLER Edelstahl GmbH & Co KGwww.voestalpine.com/bohler-edelstahl
COLD WORK STEELS BÖHLER K110
Quantitative phase diagram
Isothermal TTT curves
Lk... Ledeburite carbideRA... Residual austeniteA... AusteniteB... BainiteP... PerliteK... CarbideM... Martensite
- - - - - - Oil cooling- • - Air cooling
1... Edge or face2... Core
Austenitising temperature: 1020°C / 1868°FHolding time: 30 minutes
voestalpine BÖHLER Edelstahl GmbH & Co KGwww.voestalpine.com/bohler-edelstahl
COLD WORK STEELS BÖHLER K110
Influence of work diameter on core hardness and hardness penetration
Heat treatment sequence
Hardening temperature: 1030°C / 1886°FQuenchant:━━━━━ Oil- - - - - - Air
voestalpine BÖHLER Edelstahl GmbH & Co KGwww.voestalpine.com/bohler-edelstahl
K110 EN – 06.2021
COLD WORK STEELS BÖHLER K110
Physical Properties at 20°C / 68°F
Thermal Expansions
Temperature (°C / °F) 100 / 212 200 / 392 300 / 572 400 / 752 500 / 932 600 / 1112 700 / 1292
Thermal expansion (10⁻⁶ m/(m.K) / 10⁻⁶ inch/(inch.F)) 11 / 6.111 11.4 /
6.33311.9 / 6.611
12.2 / 6.778
12.7 / 7.056 12.8 / 7.111 12.1 / 6.722
For more information see www.voestalpine.com/bohler-edelstahl
Density 7.67 / 0.28 [kg/dm³ / lb/in³]
Thermal conductivity 23.9 / 13.81 [W/(m.K) / BTU (IT) ft/hr/ft²/F]
Specific heat 470 / 112.26 [J/(kg.K) / BTU (IT) lb/F]
Spec. electrical resistance 0.65 / 0 [Ohm.mm²/m / Ohm.inch²/ft]
Modulus of elasticity 200 / 29.01 [10³N/mm² / 10³ksi]
voestalpine BÖHLER Edelstahl GmbH & Co KGMariazeller Straße 25
8605 Kapfenberg, AT
T. +43/50304/20-0
www.voestalpine.com/bohler-edelstahl
