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300

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250L15 300L15
#300

Description

Australia AS 300 Australia Structural steel and 300 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 300
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 300 AS Australia Australia Structural steel
7-430RNTA
7-460RNTA
7-490RNTA
HA1
HA3
HA4N
HA200
200
250
250L15

Chemical composition(mass fraction)(wt.%) of the 300

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
Max 0.22 Max 0.55 Max 1.70 0.040 0.03 0.3 0.5 0.1

Mechanical Properties of steel grade 300

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)
113 (≥) 522 (≥) 41 14 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade 300

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
41 - -     0.42 -  
164 281 - 31.3 313   -  
326 - 32 23.2   322 243

Heat Treatment of steel grade 300

Heat treated : 1735°C - 1528°C

Technological Curves of steel grade 300

Cross Reference Table (Equivalent Grade) of 300

Grade Standard Country Application
UNS G10300 UNS USA General use carbon steel bar
S50300 SS USA Martensitic special steel
S42300 UNS USA Martensitic special steel
S42300 UNS USA Martensitic special steel
UNS S42300 UNS USA precipitation hardening
UNS S42300 UNS USA precipitation hardening
UNS S63005 UNS USA precipitation hardening
UNS S63007 UNS USA precipitation hardening
UNS S63008 UNS USA precipitation hardening
UNS S63009 UNS USA precipitation hardening
UNS J03000 ASTM USA
UNS J03001 UNS USA
UNS J93000 AISI USA
UNS J93005 AISI USA
UNS J93000 AISI USA
UNS J03002 AISI USA
UNS J03003 AISI USA
UNS J31300 AISI USA
411300 CSN Czech Republic The Czech republic Structural steel
11300 CSN Czech Republic The Czech republic Structural steel
250L15 300L15
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