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Exploring the Hardness of 30CrNiMo8 Steel

Exploring the Hardness of 30CrNiMo8 SteelExploring the Hardness of 30CrNiMo8 Steel

Introduction

As an industry leader in steel supply, we at OTAI are excited to introduce you to 30CrNiMo8 steel. Known for its exceptional hardness and versatility, 30CrNiMo8 is an ideal choice for a wide range of applications. This article explores the unique properties of 30CrNiMo8 steel, highlighting why it is a preferred option over alternatives like 34CrNiMo6 steel.

What is 30CrNiMo8 Steel?

30CrNiMo8 steel is a low-alloy steel that offers high strength, toughness, and wear resistance. These properties make it a popular choice in industries such as automotive, aerospace, and heavy machinery. Its applications include manufacturing of high-strength parts like crankshafts, gears, and heavy-duty axles.

Why Choose 30CrNiMo8 Over 34CrNiMo6?

When compared to 34CrNiMo6, 30CrNiMo8 stands out for several reasons. Both steels have similar applications, but 30CrNiMo8 offers enhanced hardness and toughness. This makes it better suited for high-stress environments. Additionally, 30CrNiMo8 provides superior machinability, which means it can be shaped and formed with greater ease and precision.

Key Properties of 30CrNiMo8 Steel

  • Hardness and Strength

30CrNiMo8 steel is renowned for its impressive hardness. It can achieve a hardness level of up to 50 HRC after heat treatment. This high hardness level ensures excellent wear resistance, making it ideal for components that undergo heavy wear and tear.

  • Toughness and Durability

The steel’s toughness is another significant advantage. Even at low temperatures, 30CrNiMo8 maintains its strength and resists fracture. This durability extends the lifespan of parts made from this steel, reducing the need for frequent replacements.

  • Machinability

One of the standout features of 30CrNiMo8 steel is its machinability. It can be easily cut, drilled, and shaped, allowing for precise manufacturing of complex parts. This property not only improves production efficiency but also reduces overall manufacturing costs.

Real-World Applications

  • Automotive Industry

In the automotive sector, 30CrNiMo8 steel is used to manufacture crankshafts, camshafts, and connecting rods. For instance, our client, Johnson Auto Parts, has been using 30CrNiMo8 steel for their high-performance crankshafts. According to their CEO, Mr. Johnson, “The switch to 30CrNiMo8 has significantly reduced our wear-related issues and increased the longevity of our products.”

  • Aerospace Industry

The aerospace industry demands materials that can withstand extreme conditions. 30CrNiMo8 steel is used in the production of landing gear components and high-strength fasteners. AeroTech Ltd., one of our esteemed clients, has successfully integrated 30CrNiMo8 steel into their landing gear manufacturing process. Their production manager, Ms. Smith, states, “Using 30CrNiMo8 steel has allowed us to meet stringent aerospace standards while enhancing the durability of our landing gear systems.”

OTAI’s Commitment to Quality

  • Extensive Stock Availability

At OTAI, we maintain a large inventory of 30CrNiMo8 steel in various sizes. Whether you need small quantities for a prototype or large volumes for mass production, we can meet your needs swiftly. Our quick customization services ensure you get the exact dimensions you require without long lead times.

  • Custom Packaging Solutions

We understand the importance of proper packaging. That’s why we offer tailored packaging solutions, including strapping, wooden boxes, and rust-proof packaging. These options ensure your steel arrives in perfect condition, ready for immediate use.

  • Proven Track Record

We have supplied 30CrNiMo8 steel to several Fortune 500 companies, meeting all technical specifications and delivery requirements. Our clients have consistently expressed satisfaction with our products and services.

Exploring the Hardness of 30CrNiMo8 Steel

30CrNiMo8 steel stands out as a superior material for high-strength applications. Its unmatched hardness, toughness, and machinability make it an excellent choice for industries requiring reliable and durable components. Contact us today to learn how we can meet your steel needs with our extensive stock and custom solutions. Let us help you elevate your products with the unbeatable performance of 30CrNiMo8 steel.

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Thousand tons 30CrNiMo8 stocking

Thousand tons 30CrNiMo8 stocking

30CrNiMo8 steel is German DIN standard in Q+T (quenched and tempered steel), equivalent to 30cr2ni2mo in China.

30crnimo8 material has high yield strength, tensile strength and fatigue strength, and sufficient plasticity and toughness.

Generally, EAF and BOF are used for smelting, and secondary refining, electroslag remelting or vacuum treatment, vacuum induction furnace smelting or double vacuum smelting and appropriate heat treatment are adopted for those with high requirements.

The material 30CrNiMo8 is difficult to machine. 30CrNiMo8 to achieve hrb80 below is very difficult, generally do about hrb85 can.

 

 30crnimo8 equivalent grade

EN 30CrNiMo8 – 1.6580
0.26 – 0.34 0.3 – 0.6 <0.4 <0.025 <0.035 1.8 – 2.2 1.8 – 2.2 0.3 – 0.5
PN 30H2N2M
0.26 – 0.34 0.3 – 0.6 0.17 – 0.37 <0.035 <0.035 1.8 – 2.1 1.8 – 2.1 0.25 – 0.35 <0.2
NF 30CND8 / 30NCD8
0.26 – 0.33 0.3 – 0.6 0.1 – 0.4 <0.030 <0.025 1.8 – 2.2 1.8 – 2.2 0.3 – 0.5

 

30crnimo8 steel properties

30CrNiMo8 steel belongs to DIN alloy structure tempered steel, which has high yield strength, tensile strength, and enough plasticity and toughness. The critical temperature of Ac3 in 30crnimo8 heat treatment is 800℃, and the quenching temperature is Ac3+(30 ~ 70)℃. After comprehensive consideration, the process was determined as follows: normalizing 880℃, holding heat for 5h; The quenching temperature is 840 ~ 860℃, and the holding time is 4 ~ 4.5h. Water quenching oil is used for quenching and tempering temperature is 570 ~ 620℃. The tempering time should not only ensure that the tissue transformation can be fully carried out through through burning, but also try to eliminate the residual stress.

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