AMS 6345

4130 Steel Sheets, AMS6345, AMS 6350

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Description

Aircraft Quality 4130 per 6345 & 6350 Cold Rolled Sheet

What material is AISI 4130?

AISI 4130 alloy steel contains chromium and molybdenum as strengthening agents. It has low carbon content, and hence it can be welded easily. The datasheet given below provides more details about 4130 alloy steel.

AISIΒ 4130 Steel Equivalent Standards

Country USA BS BS Japan
Standard ASTM A29 EN 10250/EN10083 BS 970 JIS G4105
Grades 4130 25CrMo4/1.7218 708A25/708M25 SCM430

ASTM 4130 Steels Chemical Composition

Standard Grade C Mn P S Si Cr Mo
ASTM A29 4130 0.28-0.33 0.40-0.60 0.035 0.040 0.15-0.35 0.80-1.10 0.15-0.25
EN10250
/EN10083		 25CrMo4/
1.7218		 0.22-0.29 0.60-0.90 0.025 0.035 ≦0.40 0.90-1.2 0.15-0.30
JIS G4105 SCM430/
SCM2		 0.28-0.33 0.60-0.85 0.030 0.030 0.15-0.35 0.90-1.2 0.15-0.30

SCM430 steel Mechanical Properties

Properties Metric Imperial
Tensile strength, ultimate 560 MPa 81200 psi
Tensile strength, yield 460 MPa 66700 psi
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Bulk modulus (Typical for steel) 140 GPa 20300 ksi
Shear modulus (Typical for steel) 80 GPa 11600 ksi
Poissons ratio 0.27-0.30 0.27-0.30
Elongation at break (in 50 mm) 21.50% 21.50%
Reduction of area 59.6 59.60%
Hardness, Brinell 217 217
Hardness, Knoop (Converted from Brinell hardness) 240 240
Hardness, Rockwell B (Converted from Brinell hardness) 95 95
Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) 17 17
Hardness, Vickers (Converted from Brinell hardness) 228 228
Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.) 70 70

Fabrication and Heat Treatment

Machinability

1.7218 steel can be easily machined using conventional methods. However, machining becomes difficult when the hardness of the steel is increased.

Forming

Forming of 7218 steel can be performed in the annealed condition.

Welding

Welding of AISI 4130 steel can be performed by all commercial methods.

Applications

The following are some of the major applications of AISI 4130 alloy steel:

  • Aircraft engine mounts
  • Welded tubing

 

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