New nichrome

Grade Percentage composition
Ni Mn Cr Si C Fe
Х20Н30 OCr20Ni30 30 — 3 up to 60 19.5 — 21.5 1 — 1,5 to 0.6 .
Х20Н35 OCr20Ni35 34−37 up to 60 19.5 — 21.5 1 — 1,5 to 0.6 .
Х30Н70 OCr30Ni70 Rest up to 60 28.0 — 31.0 1 — 1,5 to 0.6 ≤1.00
Characterization of alloys
Alloy Х20Н35 Х20Н30 KHN70JU
Elongation at break (%) more than 20 more than 20 more than 20
Tensile strength N/mm2 630−780 630−780 637−784
UD. weight g/cm3 7,9 7,9 8,1
Maximum operating t° 1100°C 1100°C 1250°C
UD. electr. resistance (Ωмм2/m) 1 Of 1.04 1,18
t° melting 1390°C 1390°C 1380°C
Linear extension. (αx10−6/°C) 19 19 17
The thermal conductivity 43.7 43.7 45.2
Service life, hours «4 thousand «4 thousand «4 thousand

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Igor

Igor

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