SAE 4130 Mechanical Properties

SAE4130 structural steel has high strength and toughness, high hardenability, and a critical hardening diameter of 15 70mm in oil; The thermal strength of steel is also good, with sufficient high-temperature strength below 500, but its strength decreases significantly at 550.

The mechanical properties of SAE4130 are as follows:

Tensile Strength b (MPa): 930(95)Yield Strength s (MPa): 785(80)Elongation δ5 (%12.)

Cross-sectional shrinkage 50

Impact power AKV (J): 63

Impact toughness value kv (j cm2): 78(8)hardness: 229hb

The chemical composition of SAE4310 is shown in the figure below.

1. See all of your additions.

You can check the ASTM A29 A29M-2004SAE 4130 designation.

SAE stands for Accredited Associations.

The first two digits of the four-digit number represent the type of steel.

The last two represent the average carbon content.

There are no separate technical standards.

The specific heat capacity and physical properties of 25CrNIMO are quite good, and the mechanical energy can reach API after heat treatment

90k；The mechanical properties of AISI4130 material are not too stable after heat treatment, and it will be difficult to reach API90K.

It seems to be a peer, API for 4130 quenching and tempering requirements are divided into several levels, commonly used are 60K and 75K, that is, the yield strength is 60Kpsi and 75Kpsi, the corresponding tensile strength can be found in the standard, because the oil industry has anti-corrosion requirements, so it also depends on the requirements for hardness in the NACE specification, the general PSL2 level requirements are 187-235HB, PSL3 3G and PSL4 levels are 197-235HB. For the quenching of AISI4130, I have done a lot here, generally speaking, it can be quenched with water, at least there is no cracking, but it should be tempered immediately after quenching.

Reply 1 Don't be afraid of just in case, water is feasible. Ha ha. But in case, the loss is not 10,000.

Upstairs can introduce your craftsmanship and the products you make.

Reply 5 The products on our side are designed according to the API 6A specification, and various types of parts are available, so I won't say much, if you are interested, check the specification. As for the process, I have done a lot of experiments, and currently use a pit furnace to stabilize the parameters within the following range: quenching 870 degrees quenching liquid cooling, water cooling + 660 degrees tempering air cooling, for different styles of workpieces, the quenching temperature is unchanged, and the tempering temperature is adjusted in a small amount to meet the requirements of hardness and mechanical properties, and the heat treatment time is calculated according to the thickness of the workpiece, generally quenching and heat preservation is not less than 2h, tempering heat preservation is not less than 3h.

That's pretty much it, so please give your comments.

It depends on what you're using it for!!

4130 steel.

Tensile Strength B (MPa): 930(95)Yield Strength S (MPa): 785(80) Elongation δ5 ( 12 Section Shrinkage 50 Impact Energy AKV (J):

63 Impact toughness value kv (j cm2): 78(8) hardness: 229hb Specimen size:

The size of the sample blank is 25mm Heat treatment specification: quenching 880, water-cooled, oil-cooled; Tempered 540, water-cooled, oil-cooled. [3]

Tensile strength (25°C MPa): 310 Yield strength (25°C MPa): 276 Hardness: 500kg, force: 10mm, ball: 95, elongation.

Some of the materials are sold, you can contact them!!

Steel is stronger than aluminum, and it is recommended to use steel on machines.

SAE4130 belongs to the American Society of Automotive Engineers standard alloy structural steel grade, the implementation standard: SAE J404-2000

The chemical composition of SAE4130 is shown in the following figure:

American Standard Chromium-Molybdenum Alloy Steel 30crmo

4130 is structural steel.

4130 structural steel has high strength and toughness, high hardenability, critical hardening diameter of 15 70mm in oil; The thermal strength of steel is also good, with sufficient high-temperature strength below 500, but its strength decreases significantly at 550.

When the alloying element is welded quite well at the lower limit, but the weldability is medium when it is close to the upper limit, and it needs to be preheated to more than 175 before welding; The machinability of the steel is good, and the plasticity is medium when cold deformed; In the range of 300 350 for heat treatment, there is a first type of tempered brittleness; There is a tendency to form white spots.

4130 structural steel has high strength and toughness, high hardenability, critical hardening diameter of 15 70mm in oil;

The thermal strength of 4130 structural steel is good, and it has sufficient high-temperature strength below 500, but its strength decreases significantly at 550; When the alloying element is welded quite well at the lower limit, but the weldability is medium when it is close to the upper limit, and it needs to be preheated to more than 175 before welding;

Chemical Composition of 4130 Structural Steel:

1. Carbon C:

2. Silicon si:

3. Manganese mn:

4. Sulfur S: allowable residual content

5. Phosphorus p: allowable residual content

6. Chromium cr:

7. Nickel Ni: allowable residual content

8. Copper Cu: allowable residual content

9. Molybdenum mo:

AISI 4130 alloy steel (UNS G41300), Executive Standard: Standard: ASTM A29 A29M-04

AISI 4130 is mainly used in the manufacture of quenched and tempered parts with large cross-sections and working under high stress conditions in the medium-sized machinery manufacturing industry, such as shafts, spindles, and high-load control wheels, bolts, stud bolts, gears, etc.

Alloy steels are represented by AISI four-digit numbers. They are more sensitive to mechanical and heat treatment than carbon steel. They include different types of steels whose composition exceeds the limits of B, C, MN, MO, NI, SI, CR, and VA in carbon steel.

AISI 4130 alloy steel contains chromium and molybdenum as reinforcing agents. It has a low carbon content, so it is easy to weld. The datasheet given below provides more details about the chemical composition of AISI4130 alloy steel.

This type of steel is usually used in a quenched and tempered state, and when the carbon content is the lower limit, it can also be used as a carburizing steel that requires a higher core strength. In the medium-sized machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections and working under high stress conditions, such as shafts, spindles, and high-load control wheels, bolts, stud bolts, gears, etc.; In the chemical industry, it is used to manufacture welded parts, welded structures composed of plates and pipes, and high-pressure conduits that work in a medium containing nitrogen and hydrogen at a temperature of no more than 250; In the steam turbine and boiler manufacturing industry, it is used to manufacture fasteners for work below 450, flanges under high pressure below 500, and [1].

Chemical composition of this paragraph.

Chromium Cr: Nickel Ni: Allowable Residual Content Copper Cu: Permissible Residual Content Molybdenum Mo:

Mechanical properties of this section.

Tensile Strength b (MPa): 930(95)Yield Strength S (MPa): 785(80) Elongation δ5 (

12 Section shrinkage 50 Impact power AKV (J): 63 Impact toughness value KV (J cm2):

78(8) Hardness : 229HB Specimen size: Specimen blank size is 25mm Heat Treatment Specification:

Quenching 880, water-cooled, oil-cooled; Tempered 540, water-cooled, oil-cooled. [3]

4130 alloy structural steel: Executive standard: ASTM A29 A29M-04, this kind of steel is usually used in the quenched and tempered state, when the carbon content is the lower limit of the steel can also be used as a carburizing steel that requires high core strength, with high strength and toughness, and high hardenability.

Corresponding Japanese grade: SCM430 (SCM2) Corresponding German grade: 34CRMO4 (

It is mainly used in the medium-sized machinery manufacturing industry to manufacture quenched and tempered parts with large cross-section and working under high stress conditions, such as shafts, spindles and high-load control wheels, bolts, stud bolts, gears, etc.;

4130 domestic grade 30crmo, is an alloy steel containing chromium and molybdenum, the tensile strength is generally above 750MPa, the one seen on the market is mainly bar and thick plate.

Thin-walled 4130 steel tubes are used to make bicycle frames, landing gear for small aircraft, engine mounts, roll cages for off-road rally racing cars, and more.

Please check the detailed composition and mechanical properties.

Alloy structural steel 4130 US standard grade, domestic corresponding to 30CRMOA, spot standing Juneng steel mills, Xining steel mills are more. Here's how.

ASTM4130 standard ASTM A29 A29M-04 corresponds to the domestic grade 30CRMO

Corresponding Japanese grade: SCM430 (SCM2).

Corresponding German grade: 34CRMO4(

Chemical composition: carbon c silicon si:

Manganese Mn:Sulfur S: Allowable residual content

Phosphorus p: permissible residual content

Chromium Cr: Nickel Ni: Permissible Residual Content

Copper Cu: Permissible residual content

Molybdenum MO: Mechanical Properties:

Tensile Strength b (MPa): 930(95)Yield Strength s (MPa): 785(80)Elongation δ5 (%12.)

Cross-sectional shrinkage 50

Impact power AKV (J): 63

Impact toughness value kv (j cm2): 78(8)hardness: 229hb

Specimen size: The specimen blank size is 25mm

Heat treatment specifications and metallographic structure:

Heat treatment specification: quenching 880, water-cooled, oil-cooled; Tempered 540, water-cooled, oil-cooled.

Delivery Status: Delivered in heat-treated (normalized, annealed or high-temperature tempered) or without heat-treated, the delivery status should be indicated in the contract. If you don't know, you can explain 1*8*0*5*8*2*8*7*6*9*9**

AISI4130 is a widely used structural steel in oilfield production, which has high hardenability. The welding quality of the steel is related to latitude, especially in field welding, which can affect the welding method, process and control of the welding rod.

SAE J403 involves the chemical formation of these two materials, and the mechanical performance of socks.

There is no cavity beating.