Alloy 17KHNGT (ЭИ814)
Alloy 40KHNM (EI995)
Alloy 97NL (EI996)
Alloy 95NLM (EI996M)
Alloy 95NLVF (EI996V)
Alloy 68NKHVKTU (EP578)
Alloy 46NKhT (EP619)
Alloy 45NHT (EP218)
Alloy 44NCTU
Alloy 42NKhTUA (H41KhTA)
Alloy 42NKHTU (42NKHTUA)
Alloy 40KHMVTU
Alloy 36KhNTU (EI702)
Alloy 36NKhTYu8M (EP52)
Alloy 36NKhTU5M (EP51)
Alloy 36NKhTU (EI702)
Alloy 21NKMT (VES-130)
Alloy 17KhNGT (EI814)
Alloy 12KhNKMTU (SP22)
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 17ХНГТ |
| Designation GOST Latin | 17XHGT |
| Transliteration | 17HNGT |
| The chemical elements | 17CrNiGeTe |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЭИ814 |
| Designation GOST Latin | EI814 |
| Transliteration | EhI814 |
| The chemical elements | - |
Description
Alloy 17KHNGT used: for the manufacture of elastic sensing elements and spring parts for General and special purposes, operating at temperatures up to +250 °C; the elastic elements in Aviapribor and automatic systems for provocatively elements.
Note
The alloy is resistant to all climatic conditions and some corrosive environments, precipitation hardening, with a temporary resistance 1470−1720 MN/m2 (150- 175 kgf/mm2), with the normal elasticity modulus 196000 MN/m2 (20000 kgf/mm2).
Standards
| Name | Code | Standards |
|---|---|---|
| Classification, nomenclature and general norms | В30 | GOST 10994-74 |
| Steel alloy wire | В73 | TU 14-1-4435-88 |
| Tapes | В34 | TU 14-1-4480-88 |
| Sectional and shaped rolling | В32 | TU 14-1-4508-88, TU 14-11-245-88 |
| Sheets and stripes | В33 | TU 14-1-4509-88 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Al | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 10994-74 | ≤0.05 | ≤0.02 | ≤0.02 | 0.8-1.2 | 16.5-17.5 | ≤0.6 | 6.5-7.5 | The rest | ≤0.5 | 0.8-1.2 |
Fe is the basis.
According to GOST 10994-74, the chemical composition is given for the alloy grade 17HNGT (EI 814).
According to TU 14-1-4508-88 the chemical composition is given for the alloy of the brands 17HNGT (EI 814) and 17HNGT-VI (EI 814-VI).
According to GOST 10994-74, the chemical composition is given for the alloy grade 17HNGT (EI 814).
According to TU 14-1-4508-88 the chemical composition is given for the alloy of the brands 17HNGT (EI 814) and 17HNGT-VI (EI 814-VI).
Mechanical characteristics
| σB, MPa | d | Brinell hardness number, MPa |
|---|---|---|
| Bars hot rolled and forged on the other 14-1-4508-88. Quenching in water from 980-1000 °C (20 min exposure), + Extract at room temperature for 24 hours + Double dispersion aged at 420 °C (2 hours) and at 500 °C (1 h), air cooling | ||
| ≥1420 | ≥5 | ≤375 |
Description mechanical marks
| Name | Description |
|---|---|
| σB | Limit short-term strength |
| d | Elongation after rupture |
