AISI 4130H Alloy Steel Chemical Composition Properties, Grade, Table and Document

The AISI 4130H alloy steel is distinguished by its high strength, toughness, and exceptionally good weldability, which make it a top choice in the aerospace, oil and gas and automotive industries, among others. The most prevalent element in its chemical make-up is carbon, with manganese, chromium, molybdenum, silicon, phosphorus, sulfur and iron being the other ones which are also included. Consequently, its carbon contents being as nominal as 0.30%, it is undoubtedly produces outstanding hardenability and wear resistance. Furthermore, its chromium and molybdenum lead to greater resistance to corrosion and strength than what is usual for metals at high temperatures. This kind of 4130H grade is normally offered heat-treated, which is characterized by the combination of the best mechanical properties. Combined this multi-purpose nature and the ability to heat-treat it per specific strength needs makes it a desirable option for diverse products application. A description of the in-depth technical data and characteristics can be found in technical documents pdf, chart and tables by the manufacturers and industry standards.

AISI 4130H Alloy Steel Chemical Composition And Grade Table

AISI 4130H alloy steel is well known for the outstanding strength and toughness strength, which makes the material apply in many of the industry specialization fields. A very distinctive feature of this metal is its chemical composition, containing carbon, manganese, chromium, molybdenum, silicone, and iron as its main components. AISI 4130H, table with the grade for its mechanical properties, includes tensile strength, yield strength, elongation and hardness factors which are important for making a decision if it is the right material for a particular application or not. This alloy offers remarkable weldability and machinability, which makes it very flexible for various applications such as aerospace, automotive and oil field equipment including parts.

AISI 4130H Alloy Steel Composition Table
Elements Carbon, C Chromium, Cr Iron, Fe Manganese, Mn Molybdenum, Mo Silicon, Si Phosphorus, P Sulfur, S
Min (%) 0.27 0.75 97.1 0.3 0.15 0.15 - -
Max (%) 0.33 1.2 98.38 0.7 0.25 0.35 <= 0.035 <= 0.040

Advantages and Disadvantages of AISI 4130H Alloy Steel

    Advantages:

  • Heat Treatable: Can be heat treated to alter material properties.

  • Good Weldability: Enables ease in welding and fabrication.

  • High Strength-to-Weight Ratio: Provides high strength without being overly heavy.

  • Excellent Fatigue Resistance: Tolerates crack growth and withstands cyclic stress.

    Disadvantages:

  • Limited Hardenability: May not achieve uniform hardness across extensive areas.

  • Susceptible to Decarburization: Possible surface microstructural changes during heat treatment.

  • Moderate Corrosion Resistance: More susceptible to corrosion than some other metals.

  • Cost: Higher cost due to specific alloying components.

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