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Bohler-Uddeholm AISI A2 Cold Work Tool Steel

Category Metal , Ferrous Metal , Alloy Steel , Tool Steel , Cold Work Steel
Manufacturer Bohler-Uddeholm
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Bohler-Uddeholm AISI A2 Cold Work Tool Steel.pdf
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Material Notes:
Description: AISI A2 is an air- or oil hardening chromiummolybdenum-vanadium alloyed tool steel characterized byAISI A2 is characterized by: Good machinability High stability after hardening High compressive strength Good hardenability Good wear resistanceApplications: AISI A2 takes a place in the Uddeholm tool steel range between AISI O1 and AISI D2, offering an excellent combination of good wear resistance and toughness. It may be regarded, therefore, as a “universal” cold work steel. For cutting operations the good toughness of AISI A2 gives excellent resistance to chipping of the cutting edge. In many cases tools made from this steel have given better tooling economy than high-carbon, high-chromium steels of the D3/W.-Nr. 2080 type. AISI A2 has much better machining and grinding properties.
Physical Properties Metric English Comments
Density 7.72 g/cc
0.279 lb/in³
hardened to 62 HRC
7.61 g/cc

@Temperature 399 °C
0.275 lb/in³

@Temperature 750 °F
hardened to 62 HRC
7.67 g/cc

@Temperature 191 °C
0.277 lb/in³

@Temperature 375 °F
hardened to 62 HRC
Mechanical Properties Metric English Comments
Hardness, Brinell 215
215
Soft annealed
Modulus of Elasticity 190 GPa
27500 ksi
(hardened to 62 HRC)
170 GPa

@Temperature 399 °C
24600 ksi

@Temperature 750 °F
hardened to 62 HRC
185 GPa

@Temperature 191 °C
26900 ksi

@Temperature 375 °F
hardened to 62 HRC
Compressive Yield Strength 1350 MPa
196000 psi
0.2%, hardened to 50 HRC
1800 MPa
261000 psi
0.2%, hardened to 55 HRC
2150 MPa
312000 psi
0.2%, hardened to 60 HRC
2200 MPa
319000 psi
0.2%, hardened to 62 HRC
Thermal Properties Metric English Comments
CTE, linear 6.50 µm/m-°C

@Temperature 20.0 - 200 °C
3.61 µin/in-°F

@Temperature 68.0 - 392 °F
hardened to 62 HRC
Specific Heat Capacity 0.460 J/g-°C

@Temperature 20.0 °C
0.110 BTU/lb-°F

@Temperature 68.0 °F
hardened to 62 HRC
Thermal Conductivity 26.0 W/m-K

@Temperature 20.0 °C
180 BTU-in/hr-ft²-°F

@Temperature 68.0 °F
hardened to 62 HRC
27.0 W/m-K

@Temperature 191 °C
187 BTU-in/hr-ft²-°F

@Temperature 375 °F
hardened to 62 HRC
28.5 W/m-K

@Temperature 399 °C
198 BTU-in/hr-ft²-°F

@Temperature 750 °F
hardened to 62 HRC
Component Elements Properties Metric English Comments
Carbon, C 1.0 %
1.0 %
Chromium, Cr 5.3 %
5.3 %
Manganese, Mn 0.60 %
0.60 %
Molybdenum, Mo 1.1 %
1.1 %
Silicon, Si 0.30 %
0.30 %
Vanadium, V 0.20 %
0.20 %
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