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| Place of Origin | Jiangsu China |
| Brand Name | Guangda |
| Certification | DNV, BV, Rina, ISO, GL, ABS, LR ,CCS ,PED |
AISI 4130 75K P+X Class D/D Forged Steel Round Bar Square Bar
Alloy Steel Solid Bar AISI 4130 Confirm to API-6A PSL - 3 Material Class DD, U, NACE MR-0175,
H2S Service Min 75K Yield, Hardness 18-22 HRC Refer EM-QC-03 Latest Edition
Delivery condition : Forged + Normalized + Rough Turned + Q/T. Temperature class P+X
Supply condition for AISI 4130 Forged steel bars:
Forged from vacuum degassed ingots.
Black /Rough Machined /Rough turned
Processing of 4130 forged steel
EAF + LF + VD + Forged +Normalized+Rough Turned+ Heat Treatment (optional)
Forged Round Bar AISI 4130 Product features
| Material | AISI 4130 1.7218 |
| Type | Forged bar ,round ,square, flat, block, shaft etc. |
| Diameter | φ150-1500mm |
| Length | Max 10000mm (10m) |
| Surface | Black, peeled, polishing, bright, sand blast, hair line, etc. |
| Application | Heavy machinery axle,turbine shaft blade, high load of transmission parts, fasteners, crank shafts, gears, as well as heavily loaded parts for motor construction etc. |
| Tensile strength test | DIN EN ISO 6892-1 |
| Impact test | DIN EN ISO 148-1 |
| UT | DIN EN10228 Quality-Class 3 C/c or D/d |
| Grain size | ASTM E112 / EN ISO 643 |
| Applicable standard | EN10250,EN10083,SEW550 etc |
| Certificate | EN 10204 / 3.1 3.2 |
Forged Round Bar Forged Round Bar AISI 4130 Chemical Compostion
| Standard | Grade | C | Mn | P | S | Si | Cr | Mo |
| ASTM A29 | 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.04 | 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 |
Forged Round Bar AISI 4130 Mechanical properties
| Properties | Metric |
| Tensile strength, ultimate | 560 MPa |
| Tensile strength, yield | 460 MPa |
| Modulus of elasticity | 190-210 GPa |
| Bulk modulus (Typical for steel) | 140 GPa |
| Shear modulus (Typical for steel) | 80 GPa |
| Poissons ratio | 0.27-0.30 |
| Elongation at break (in 50 mm) | 21.50% |
| Reduction of area | 59.6 |
| Hardness, Brinell | 217 |
| Hardness, Knoop (Converted from Brinell hardness) | 240 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 95 |
| Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.) | 17 |
| Hardness, Vickers (Converted from Brinell hardness) | 228 |
| Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.) | 70 |
Forged Round Bar AISI 4130 Comparison of steel grades
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CES Name
|
UK | UN | USA | Germany | France | Italy | Japan | Russia | ||
| 4130 | 708A30 | G41300 | 4130 | 1.7218 | 25CrMo4 | 30CD4 | 30CrMo4 | SCM420 | 30ChM |
Forged Round Bar AISI 4130 Heat treatment
AISI/SAE 4130 steel grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength up to around 315º C (600º F). It shows good overall combinations of strength, toughness and fatigue strength.
Forged Round Bar AISI 4130 Application
About Guangda For forged round bar
AISI 4130 75k
4130 round bar
API 4130
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