36KNM rod, wire, sheet
Technical characteristics
36KNM grade relates to soft-magnetic alloys that possess a high corrosive resistance, low coercitive force and great induction of mean and weak fields. A differential peculiarity of this grade is a high resistance to corrosion and significant induction magnitude in magnetic weak fields. Basically, alloy is used in manufacture of magnet wires that exploit in aggressive environment (in a sea water etc.) Except of ferrum (a basis), this grade contains cobalt (36%), nickel (22%), molybdenum (2,9 — 3,3%) in its composition. In a capacity of alloy additives are used silicon and mangan.
Welding:
| Type |
Description |
| limitedly weldable |
— welding is possible at heating to 100−120°С and last heat treating |
| hardly weldable |
— in order to obtain a qualitative welded joints, it is necessary to perform the following operations: while welding to heat it up to 200−300°C, heat treating (annealing) after welding |
| weldable without stint |
— welding is done without further heat treating or previous heating |
Percentage composition of 36KNM:
| P |
Cr |
V |
Ni |
C |
S |
Si |
Mo |
Mn |
Cu |
Al |
| ≤0.015 |
≤0,15 |
≤0.1 |
35 — 37 |
≤0.05 |
≤0.015 |
≤ 0.3 |
≤0.1 |
0.3 — 0.6 |
≤0.1 |
≤0.1 |
Mechanical features of alloy at a temperature 20 °C.
| Products |
Size |
KCU |
y |
d5 |
sT |
sv |
F.e. |
Heat treating |
| GOST 14 080−78 |
mm |
kJ/m2 |
% |
% |
MPa |
MPa |
- |
- |
| Hammer-hardened strip |
930 |
- |
- |
- |
- |
- |
- |
- |
Mechanical characteristics:
| Description |
Identification |
| Short resistance to rupture [MPa] |
sv |
| Flow limit (proportional limit load) for permanent change of form [MPa] |
sT |
| Percent elongation at fracture [ % ] |
d5 |
| Contraction ratio |
y |
| Impact hardness [ kJ/m2] |
KCU |
| Brinell hardness [MPa] |
HB |
Physical characteristics of 36KNM
| С° |
1/С° |
kg/m3 |
J/(kg/deg) |
V/(m/deg) |
MPa |
Ohm-m |
| |
|
1,42 |
20 |
420 |
1,45 |
8200 |
Physical characteristics of an actual alloy grade:
| Description |
Identification |
| Modulus of elasticity of first genus [MPa] |
E |
| Required temperature for obtaining of actual features, [Degree] |
T |
| linear expansion thermal coefficient [1/degree] (range of temperatures 20°С) |
a |
| electrical unit-area resistance [Ohm-m] |
R |
| Density of an actual material, [kg/m3] |
r |
| Heating capacity of material (or coefficient of conductivity for heat) [V/(m/deg)] |
l |
| Specific heat of a material [J/(kg/deg)] (range of temperature 20°С) |
C |
Magnetic characteristics:
| Description |
Identification |
| Coercive field (not higher) [A/m] |
Hc |
| Magnetical inductive capacity (not higher) [mH/m] |
Umax |
| Specific loss (not higher) 50 hz of frequency, magnetic induction 1.0 Т[ V/kg ] |
P1.0/50 |
| Magnetic T induction, magnetic field strength is no less than 100, in magnetic field, [A/m] |
B100 |
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