Find below the search results for the material you've specified.
Please note here this information is NOT to be used for design purposes, and in no event shall MSO be liable for any damages arising from the misuse of this information
AISI 420
AMS 5506
AMS 5621
ASTM A276
ASTM A314
ASTM A473
ASTM A580
DIN 1.4007
DIN 1.4021
QQ S763
QQ S766
UNS S42000
Chemistry Data
Carbon
0.15 min
Chromium
12 - 14
Iron
Balance
Manganese
1 max
Phosphorus
0.04 max
Silicon
1 max
Sulphur
0.03 max
General Information
Principal Design Features
This alloy is a general purpose heat treatable chromium steel which is a popular cutlery grade.
Applications
Dental and surgical instruments, cutlery, pump shafts, plastic molds and dies, steel balls, and various hand tools.
Machinability
Similar to machining some of the high carbon tool steel, this alloy has tough, stringy chip build-up.
Welding
Not commonly welded due to its air hardening characteristics. Welding may be performed after preheating to 300-400 F (149-204 C) with post weld tempering at temperature for 2 hours . Filler metal should be AWS E/ER420.
Hot Working
Bring temperatures slowly up to 1400 F (760 C), then on to 2000-2200 F (1097-1204 C), after working, furnace cool slowly to avoid cracking. Reheat often to keep the working temperature above 1600 F.
Cold Working
420 will withstand only minor cold work. Radical forming operations will result in cracking.
Annealing
1550-1650 F (843-900 C), slow furnace cooling.
Tempering
300-400 F (149-204 C), air cool for maximum hardness and corrosion resistance.
Hardening
Soak at 1850-1950 F (1010-1066 C) at quench in heated oil.
Physical Data
Density (lb / cu. in.)
0.278
Specific Gravity
7.7
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
0.11
Electrical Resistivity (microhm-cm (at 68 Deg F))
330
Melting Point (Deg F)
2650
Modulus of Elasticity Tension
29
Mechanical Data
MSO currently has no data available for this grade.
Disclaimer
This information is provided "as is" and Metal Suppliers Online, LLC makes no warranty of any kind with respect to the subject matter or accuracy of the information contained herein. Metal Suppliers Online, Inc. specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose.
In no event shall Metal Suppliers Online, Inc. be liable for any special, incidental, indirect or consequential damages of any kind or any damages whatsoever resulting from loss of use, data, profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the use of the information contained herein.
This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
