Nickel NP4
Designation
| Name |
The value |
| Designation GOST Cyrillic |
НП4 |
| Designation GOST Latin |
HP4 |
| Transliteration |
NP4 |
| The chemical elements |
NiП4 |
Description
Nickel NP4 is used: for the manufacture of semi-finished products (wire, ribbons, sheets, strips) used in instrument making and mechanical engineering; joints of sheet structures with thickness more than 6.0 mm, working with radioactive environment; tape thickness of 0.05−2.0 mm, used in electronics and other industries.
Standards
| Name |
Code |
Standards |
| Tapes |
В54 |
GOST 2170-73 |
| Wire of non-ferrous metals and their alloys |
В74 |
GOST 2179-75, OST 4.021.109-92 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 28873-90, GOST 492-2006, OST 4.021.009-92 |
| Sheets and stripes |
В53 |
GOST 6235-91 |
| Welding and cutting of metals. Soldering, riveting |
В05 |
OST 95 10441-2002 |
Chemical composition
| Standard |
C |
S |
Mn |
Si |
Ni |
Fe |
Cu |
Mg |
Ni+Co |
| GOST 492-2006 |
≤0.1 |
≤0.015 |
≤0.2 |
≤0.15 |
The rest |
≤0.3 |
≤0.15 |
≤0.1 |
≥99 |
Ni is the basis.
According to GOST 492-2006, the total mass fraction of impurities is ≤ 1.0%. Due to the mass fraction of nickel, the mass fraction of cobalt in the amount of ≤ 0.60% is allowed.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d |
d10 |
| Hot-rolled sheets, hot rolled and cold rolled strip in the delivery state according to GOST 6235-91 |
|
- |
≥370 |
≥15 |
- |
- |
|
- |
≥370 |
≥35 |
- |
- |
|
- |
≥540 |
≥2 |
- |
- |
| Tape supplied according to GOST 2170-73 (samples transverse) |
| - |
- |
≥390 |
≥35 |
- |
≥32 |
| - |
- |
≥440 |
≥12 |
- |
≥10 |
| - |
- |
≥540 |
≥3 |
- |
≥2 |
| Sheet g/K after annealing |
|
≥220 |
400-500 |
35-40 |
- |
- |
| Cold-drawn wire in soft (annealed) and hard (cold-worked) condition of delivery on the OST 4.021.109-92 (longitudinal samples) |
| 0.3-0.4 |
- |
≥420 |
- |
≥18 |
- |
| 0.5-1 |
- |
390-590 |
- |
≥20 |
- |
| 1.2-1.6 |
- |
390-530 |
- |
≥26 |
- |
| 2-12 |
- |
≥370 |
- |
≥26 |
- |
| 0.3-0.5 |
- |
780-1080 |
- |
- |
- |
| 0.6-1 |
- |
740-980 |
- |
- |
- |
| 1.2-5 |
- |
690-880 |
- |
- |
- |
| 5.6-12 |
- |
590-830 |
- |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d |
Elongation after rupture |
| d10 |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
| 20 |
225 |
8900 |
596 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| С |
Specific heat |
Technological properties
| Name |
The value |
| Weldability |
Automatic arc welding with non-consumable electrode in a continuous mode, manual argon arc welding with non-consumable electrode (filler or without filler metal), use of combined methods of welding. |
