Chemical
Composition Limits
|
Weight %
|
Ni
|
Co
|
Cr
|
Mo
|
Ti
|
Fe
|
Si
|
Mn
|
P
|
B
|
S
|
C
|
MP35N®
|
33-37
|
Bal
|
19-21
|
9-10.5
|
1 max
|
1 max
|
0.15 max
|
0.15 max
|
0.015 max
|
0.010 max
|
0.010 max
|
0.03 max
|
MP35N® is a registered trademark of
SPS Technologies Inc.
|
MP35N® is a multi-phase alloy containing Nickel,
Cobalt, Chromium and Molybdenum with a unique range of properties - ultra high
strength, toughness, bio-compatibility and corrosion resistance. It is produced
by vacuum induction melting and vacuum arc re-melting (VIM-VAR) and is then
strengthened by work hardening and aging, giving hardness's of up to 55-60
Rockwell C and strength levels as high as 260-300 KSI.
Due, to this unique combination of properties, MP35N® has many applications in
such industries as oil and gas, aerospace and medical. MP35N can be effectively
used at cryogenic temperatures without embrittlement and maintain its
properties at temperatures up to 600°F, and is also suitable for medical
implants and orthodontic/prosthetic devices.
MP35N® is able to resist corrosion to most mineral acid, hydrogen sulfide and
seawater environments whilst exhibiting excellent resistance to stress
corrosion cracking and hydrogen embrittlement, even at high strength levels.
NACE MR0175 allows a hardness of up to 51 HRC for material that has been work
strengthened and aged by one of the processes listed in the table below.
Anita Steel & Metals supplies MP35N® in round bar certified to either AMS
5844 (0.270" - 1.520" diameter) or NACE MR0175 (0.5" - 2.5"
diameter), as well as sheet, strip and plate products suitable for medical
applications.
Typical Mechanical Properties
Material
|
Condtion
|
Ultimate Tensile Strength ksi
|
0.2 % Yield Strength ksi
|
Elongation %
|
Reduction of Area %
|
Hardness HRC
|
MP35N ®
AMS 5844
|
Solution Heat Treated and Work Strengthened
|
255
|
225
|
12
|
50
|
45
|
MP35N®
AMS 5845
|
Solution Heat Treated and Work Strengthened and
Aged
|
260
|
230
|
8
|
35
|
38 min
|
AMS 5844 is Solution Treated and Cold Worked.
The AMS specification only requires that the hardness shall not be lower than
38 HRC or equivalent. However other typical mechanical properties of AMS 5844
are detailed above.
Material
|
Condtion
|
Tensile Strength ksi
|
Yield Strength ksi
|
Elongation %
|
Reduction of Area %
|
Hardness HRC
|
MP35N®
NACE MR0175
|
Age @ 1300°F/ 4 hrs
|
220
|
210
|
10
|
40
|
51 max
|
MP35N®
NACE MR0175
|
Age @ 1350°F / 4hrs
|
210
|
200
|
10
|
40
|
51 max
|
MP35N®
NACE MR0175
|
Age @ 1425°F / 6hrs
|
190
|
180
|
10
|
40
|
51 max
|
MP35N® Properties as per NACE MR0175 - Cold Drawn
- Reduced Strength (min properties, round bar under 2" dia)
|
Availability
Alloy MP35N® is available in Round Bar,
Tube, Wire, Sheet and Plate. For all stock availability contact Sales.
Specifications
UNS R30035
AMS 5758 - MP35N® VIM-VAR Bar
Solution heat treated @1900-1925°F for 4 to 8 hours
AMS 5844 - MP35N® VIM-VAR Bar
Solution heat treated @1900-1925°F for 4 to 8 hours and Work Strengthened
AMS 5845 - MP35N® VIM-VAR Bar
Solution heat treated @ 1900-1925°F for 4 to 8 hours, Work Strengthened &
Aged @ 1000-1200°F for 4 hours
NACE MR0175
ASTM F-562 - Surgical Implant Applications
BS 7252-6 Surgical Implant Applications
ISO 5832-6 Surgical Implant Applications
MP35N® is a registered trademark of Standard Pressed Steel (SPS) Technologies
Inc.