4J49
4J49 · other
4J49
| GB/T 15018-1994
Ni 46.0-48.0 Cu 0.30-0.60 Fe bal (low expansion, low thermal drift)
4J50
4J50 · other
4J50
| GB/T 15018-1994
Ni 49.0-50.5 Fe bal (low expansion)
4J51
4J51 · other
4J51
| GB/T 15018-1994
Ni 50.5-51.5 Fe bal (low expansion, soft magnetic expansion)
4J52
4J52 · other
4J52
| GB/T 15018-1994
Ni 51.5-52.5 Fe bal (low expansion)
4J53
4J53 · other
4J53
| GB/T 15018-1994
Ni 41.5-43.0 Fe bal Ti 2.2-2.7 (Fe-Ni-Ti low expansion, hardenable)
4J54
4J54 · other
4J54
| GB/T 15018-1994
Ni 54.0-55.0 Fe bal (low expansion)
4J58
4J58 · other
4J58
| GB/T 15018-1994
Ni 57.0-58.5 Fe bal (low expansion, glass sealing)
4J78
4J78 · other
4J78
| GB/T 15018-1994
Fe-Ni-Cr: Ni 38.0-40.0 Cr 19.0-21.0 Fe bal (corrosion-resistant low expansion)
4J80
4J80 · other
4J80
| GB/T 15018-1994
Fe-Ni-Cr: Ni 38.0-40.0 Cr 19.0-21.0 Ti 2.2-2.7 Fe bal (corrosion-resistant low expansion)
4J82
4J82 · other
4J82
| GB/T 15018-1994
Fe-Ni-Cr: Ni 38.0-40.0 Cr 19.0-21.0 Ti 4.0-5.0 Fe bal (corrosion-resistant low expansion)
4J83
4J83 · other
4J83
| GB/T 15018-1994
Fe-Ni-Cr: Ni 36.0-38.0 Cr 11.5-13.0 Ti 2.2-2.7 Fe bal (corrosion-resistant low expansion)
4J84
4J84 · other
4J84
| GB/T 15018-1994
Fe-Ni-Cr: Ni 36.0-38.0 Cr 11.5-13.0 Ti 4.0-5.0 Fe bal (corrosion-resistant low expansion)
4J86
4J86 · other
4J86
| GB/T 15018-1994
Fe-Ni-Cr: Ni 36.0-38.0 Cr 11.5-13.0 Ti 2.2-2.7 Fe bal (variant)
4J89
4J89 · other
4J89
| GB/T 15018-1994
Fe-Ni-Cr: Ni 36.0-38.0 Cr 11.5-13.0 Ti 4.5-5.5 Fe bal (variant)
4J91
4J91 · other
4J91
| GB/T 15018-1994
Fe-Ni-Cr: Ni 38.0-40.0 Cr 19.0-21.0 Ti 2.2-2.7 Fe bal (variant)
4J93
4J93 · other
4J93
| GB/T 15018-1994
Fe-Ni-Co-Cr: Ni 36.0-38.0 Co 4.5-5.5 Cr 11.5-13.0 Ti 2.2-2.7 Fe bal (variant)
4L
4L · alloy
4L
Bar,Plate | API 7 4L
C:0.30-0.45;Mn:0.60-1.00;Si:0.15-0.35;Cr:0.50-1.00;P:≤0.035;S:≤0.040
4M
4M · alloy
4M
Bar,Plate | API 7 4M
C:0.30-0.45;Mn:0.60-1.00;Si:0.15-0.35;Cr:0.50-1.00;P:≤0.035;S:≤0.040
4R
4R · alloy
4R
Bar,Plate | API 7 4R
C:0.30-0.45;Mn:0.60-1.00;Si:0.15-0.35;Cr:0.50-1.00;P:≤0.035;S:≤0.040
4X2V
4X2V8F · other
4X2V8F
Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Chromium (≈0.65%) improves hardenability, wear and corrosion resistance. Molybdenum (≈0.225%) raises high-temperature strength and prevents temper embrittlement. | GOST 1435 4X2V8F
C:0.50-0.60;Si:≤0.40;Mn:0.50-0.80;Cr:0.50-0.80;Ni:1.40-1.80;Mo:0.15-0.30