4130 Steel is a low alloy steel that contains chromium and molybdenum as strengthening agents. With a nominal carbon content of 0.30% this alloy is excellent for fusion weldability. 4130 can also be hardened through heat treatment.
4130 can increase its wear quality through nitriding. 8630 and 4130 have similar properties. 4130 is known as a Chrome-Moly alloy. In addition alloy 4130 is stocked in a normalized, quench and tempered conditions.
4140 and 4130 are similar but 4130 has better weldability due to the smaller amount of Carbon but does give up through thickness strength based on that Carbon content as well.
AISI 4130 ALLOY STEEL
AISI4130 alloy steel manufacturers and suppliers,supplied with round rods,square/flat bars,rollers,shafts,blocks and forging pieces.
AISI4130 grade is a low-alloy steel including chromium and molybdenum as strengthening elements which has good strength and toughness,weldability and machinability. AISI4130 is widely used in the oil and gas industry. Typical applications include components such
as valve bodies, pumps and fittings.
AISI 4130 ALLOY STEEL CHEMICAL COMPOSITION PER ASTM A29
| GRADE |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
| 4130 |
0.28-0.33 |
0.15-0.35 |
0.40-0.60 |
≤ 0.035 |
≤ 0.040 |
0.80-1.10 |
0.15-0.25 |
AISI 4130 ALLOY STEEL 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 |
AISI 4130 ALLOY STEEL HEAT TREATMENT
Normalizing For AISI4130
1.Nominal normalizing temperature:850-900°C
2.Hold the temperature for several hours
3.Cooling in the air
Annealing For AISI4130
1.Nominal Annealing temperature:690-720°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 225
Hardening and Tempering(QT) For AISI4130
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
AISI 4130 ALLOY STEEL 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
AISI 4130 ALLOY STEEL 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
AISI 4130 ALLOY STEEL 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
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