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Gr 620

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Gr 485 Gr 825
#Gr #620

Description

USA Gr 620 Highway Bridges with steel casting and Gr 620 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: Gr 620
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy Gr 620 USA Highway Bridges with steel casting
Grade 485-250(70-35)
Grade 485-275(70-40)
J02500
J03500
J02500
J03000
J03001
J03501
J02501
Gr 485

Chemical composition(mass fraction)(wt.%) of the Gr 620

C(％) P(％) S(％)
0.35 0.05 0.06

Mechanical Properties of steel grade Gr 620

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)
264 (≥) 858 (≥) 32 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade Gr 620

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
32 - -     0.21 -  
382 529 - 43.3 224   -  
683 - 11 22.2   324 241

Heat Treatment of steel grade Gr 620

Heat treated : 1944°C - 1778°C

Technological Curves of steel grade Gr 620

Cross Reference Table (Equivalent Grade) of Gr 620

Grade Standard Country Application
Type418(GreekAscollOy) UNS USA
Type418(GreekAscollOy) UNS USA
ASTM A335 GRADE P9 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P91 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P92 AMS USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM Grade N1 ASTM USA
ASTM Grade N2 ASTM USA
ASTM Grade U-415-205(60-30) ASTM USA
ASTM Grade 415-205(60-30) ASTM USA
ASTM Grade 450-240(65-35) ASTM USA
ASTM Grade 485-250(70-35) ASTM USA
ASTM Grade 485-275(70-40) ASTM USA
Grade1 AISI USA
Grade1 AISI USA
Grade2 GBT USA
Grade21 AISI USA
Grade31 AISI USA
GP240GR UNE Spain Spain structural alloy steel
S16Gr17Ti CSN Czech Republic The Czech republic Structural steel
V-GRAPH ABNT Brazil Brazil Stainless steel
Gr 485 Gr 825
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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