SAE 4130/AISI 4130 Quality Alloy steel

SAE 4130/AISI 4130 alloy steel manufacturers and suppliers,supplied with round rods,square/flat bars,rollers,shafts,blocks and forging pieces.

SAE 4130/AISI 4130 grade is a low-alloy steel including chromium and molybdenum as strengthening elements which has good strength and toughness,weldability and machinability. SAE 4130/AISI 4130  is widely used in the oil and gas industry. Typical applications include components such as valve  bodies, pumps and fittings.

aisi 4130 alloy steel bar
Chemical Composition
National
Standard
Grade C Si Mn Cr Mo P S
DIN 25CrMo4
(1.7218)
0.22-0.29 ≤0.4 0.6-0.9 0.9-1.2 0.15-0.3 ≤0.025 ≤0.035
AISI/SAE 4130 0.28-0.33 0.15-0.35 0.4-0.6 0.8-1.1 0.15-0.25 ≤0.035 ≤0.04
JIS SCM430 0.28-0.33 0.15-0.35 0.6-0.85 0.9-1.2 0.15-0.3 ≤0.035 ≤0.04
GB 30CrMo  0.26-0.34  0.17-0.37  0.4-0.7  0.8-1.1  0.15-0.25  ≤0.035  ≤0.035
Size&Tolerance&Process
Shape Size(mm) Process Tolerance Length(mm)
Round Φ6-Φ50 Cold Drawn H11 3000-5800
Round Φ40-Φ300 Hot Rolled -0/+3mm 3000-10000
Round Φ120-Φ1000 Hot Forged -0/+3mm 3000-10000
Flat/Square/Block Thickness:120-800
Width:120-1500
Hot Forged -0/+3mm 500-6000

Heat Treatment
Normalizing For SAE 4130
1.Nominal normalizing temperature:850-900°C
2.Hold the temperature for several hours
3.Cooling in the air

Annealing For SAE 4130
1.Nominal Annealing temperature:690-720°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 225

Hardening and Tempering(QT) For SAE 4130
1.Nominal Hardening temperature:860-890°C
2.Hold at this temperature then quench in oil or water
3.Tempering  as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature of 550-640°C
5.keep the material out of the furnace ,then cool in the air

Mechanical Property( for reference only)
1.Tensile strength: 940MPa
2.Yield point: 790MPa
3.Percentage reduction of area after fracture: 52%
4.Elongation after fracture: 13%
5.Impact test (+20°C): Transverse – 27~35J; Longitud – 47~50J

Delivery Condition
1.Shape:Round/Square / Flat/Shafts/Rollers/Blocks
2.Surface condition:Black surface/Bright surface
3.Heat Treatment:Normalized/Annealed/QT
4.Straightness:Max 3mm/m(Enhanced straightness may be available on request)
5.Length:3000-5800mm suitable for 20″container.  above 6000mm,suitable for 40″ container
6.Grain Size: 5-8 acc to ASTM E112-96
7.Ultrasonic Standard: Sep1921/ASTM A388/EN 10228-3
8.Typical Hardness:HB207-235
9.Non Metallic Inclusion: 2 max acc to ASTM E45 /K4≤20 acc to DIN 50602
10.Forging Ratio: minimum 4 : 1
11.Marking: Grade/Weight/Length/Size/Heat Number

Quality Certification
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria