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Chemistry
Data
There is no chemistry data available for this grade.
Principal Design Features
This is a high carbon martensitic stainless with moderate
corrosion resistance good strength and the ability to
obtain and keep excellent hardness (Rc 60) and wear resistance.
Applications
Ball bearings and races, gage blocks, molds and
dies, cutlery, valve components, knives and measuring
instruments.
Machinability
Best machined in the annealed condition. Tough,
stringy chips can be best handled by the use of chip breakers.
Carbide or ceramic tooling is recommended.
Welding
This alloy is not commonly welded due to its tendency
to air harden. If it must be welded, preheat to 500 F
(260 C) and post weld treat at 1350-1400 F (732-760 C)
for 6 hours followed by a slow furnace cooling to avoid
cracking. Use similar filler metal and high heat inputs
during operations.
Hot Working
Pre-heat to 1400 F (760 C), then bring slowly up to 1900-2200
F (1038-1204 C)before proceeding. Do not work this material
below 1700 F (927 C). Cool material slowly after working
and once at room temperature, anneal fully.
Cold Working
This alloy is considered only slightly cold workable by
common practices.
Annealing
1550-1600 F (843-871 C), followed by very slow furnace
cooling.
Tempering
For maximum properties, soak at 300 F (148 C). Maximum
obtainable hardness is RC 60.
Hardening
Bring the material slowly up to 1400 F (760 C), then on
to a soak temperature of 1850 F (1010 C), air or oil cool.
Mechanical Data
There is no Mechnical data available for this grade.
Disclaimer
This information is provided "as is" and Prayas
Metals, makes no warranty of any kind with respect to
the subject matter or accuracy of the information contained
herein. Prayas Metals, 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 Prayas Metals, 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.
