45khn2mfa - k2425 - 45hnmf pipe, round, rod
|Mark||Analogue||W. Nr.||Aisi Uns||En||Order|
|45ХН2МФА||k2425||45hnmf||Delivery from the stock, in stock|
Alloy structural steel. Hardness on the Brinell hardness after annealing HB 10 -1 = 269 MPa. Difficult weldability of the steel, not prone to temper embrittlement.
Percentage composition, GOST 4543−71
|basis||0.42 — 0.5||0.17 — 0.37||0.5 — 0.8||1.3 — 1.8||≤0.025||≤0.025||0.8 — 1.1||0.2 — 0.3||0.1 — 0.18||≤0.3|
Mechanical properties (20°C)
|-||MPa||MPa||%||%||kJ / m2||-|
|Bars||4543−71||1420||1275||7||35||390||Tempering 860 °C, oil,|
|t°C||E 10— 5||a 10 6||l||C||R 10 9|
sin the Limit of short-term strength
sT — the Limit of proportionality (yield strength for permanent deformation)
d5 — elongation at break.
KCU — Impact strength
E — the Modulus of elasticity of the first kind [MPa]
a — Coefficient of thermal (linear) expansion
l — Coefficient of thermal conductivity (the heat capacity of the material)
Torsion bars, gear boxes and other loaded parts operating under torsional alternating loads and subject to dynamic loads.
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