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300M Alloy Steel Round Bars High Quality Suppliers

300M Alloy Steel Round Bars High Quality Suppliers
group name
Alloy Steel Bars
Min Order
1 piece
brand name
fushun
model
300M
Nearest port for product export
Tianjin, Qingdao, Shanghai, Huangshi
Delivery clauses under the trade mode
FOB, CFR, CIF, CIP, CPT, DDP, DDU, DAF
Acceptable payment methods
T/T, L/C, D/P D/A
update time
Mon, 01 Mar 2021 15:02:25 GMT

Paramtents

  • Delivery Condition normalised and tempered/softened

Packging & Delivery

  • Min Order1 piece

Briefing

300M Alloy Steel Round Bar's chemical component and applications. Fushun Metal is suppliers of 300M Alloy Steel Round Bars

Detailed

Introduce

  300M is a high performance alloy steel which is a vacuum melted grade, supplied in the normalised and tempered/softened condition to enhance machinability prior to final heat treatment.

  It has a combination of ultra high strength, good fatigue resistance and excellent transverse properties, and as such finds many applications in the aerospace industry, such as undercarriage components, gears and shafts.

Applications
300M can be used in a variety of applications, here are just a few examples:
*Undercarriage components
*Gears
*Shafts
*Aircraft landing gear
*High strength bolts
Standard
AMS 6417, ASTM A579
Properties
Density: 7.85 g/cm^3

Specific Heat Capacity: 448 J/kg*K

Coefficient of Thermal Expansion from -17.8-93°C: 11.34 µm/mm/°C
Chemical Component %

C

Si

Mn

P

S

Cr

Mo

Ni

V

0.38-0.46

1.45-1.8

0.6-0.9

0.01

0.01

0.7-0.95

0.3-0.65

1.65-2

0.05

Mechanical Properties

Mechanical & Physical Properties

21 °C

Ultimate Tensile Strength /MPa

1981

0.2% Yield Strength /MPa

1672

Reduction of area %

35

Elongation %

10

Room Temperature Hardness/ Rockwell C

58

 (Normalised at 927 °C for 1 hour+air cool/Austenitised at 871°C for 1 hour + oil quench/Tempered at 302°C for 1 hour+air cool)


Hardness at Various Tempering Temperature

204°C

316°C

427°C

538°C

649°C

Hardness / Rockwell C

53

52.5

50

47

35

(Austenitised at 871°C for 1 hour + oil quench/Tempered for 2+2 hour+air cool)