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Ao 550

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Hungary MSZ Ao550 Unalloyed steel castings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Ao550 / Ao 550
Category Grade Standard Region/Area Standard Content
Metals Ao 550 MSZ 8276 Hungary Unalloyed steel castings

Chemical composition(mass fraction)(wt.%) of the Ao 550

Element Min Max Similar
Si 0.2000 0.4200 -
S - 0.0600 -
P - 0.0600 -
Mn 0.4000 0.9000 -
C 0.4100 0.5000 -

Mechanical Properties of steel grade Ao 550

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
844 (≥) 377 (≥) 11 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade Ao 550

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
21 - -     0.23 -  
721 847 - 34.3 411   -  
343 - 11 22.2   331 312

Heat Treatment of steel grade Ao 550

Heat treated : 1632°C - 1235°C

Technological Curves of steel grade Ao 550

Cross Reference Table (Equivalent Grade) of Ao 550

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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