About M152 Round Bar

M152 (Jethete) Round Bars | Mahadev Steel India

Mahadev Steel India stands as the benchmark for excellence in the specialized alloy steel industry. As one of the biggest importers and stockholders in the country, we bridge the gap between high-end international metallurgy and Indias growing aerospace, defense, and power sectors.

We take immense pride in our sourcing ethics: Mahadev Steel India exclusively imports M152 from premium mills in Europe (Germany, France, Italy), Britain (UK), and Taiwan. We maintain a strict "No-China Origin" policy to ensure that our clients receive materials with the highest fatigue strength, structural integrity, and zero internal impurities.

1. Material Profile: What is Jethete M152?

Jethete M152 (commonly referred to as M152) is a nitrogen-bearing, 12% chromium martensitic stainless steel. Unlike standard 400-series stainless steels, M152 is alloyed with Nickel, Molybdenum, and Vanadium. This unique chemical blueprint allows the material to retain high mechanical strength, excellent notch toughness, and superior creep-rupture properties at elevated temperatures.

Technical Standards & Equivalents

We provide M152 round bars that comply with global aerospace and industrial standards:

• UNS Number: S64152

• Werkstoff Numbers: 1.4933, 1.4938, 1.4939

• Aerospace Material Specifications (AMS): AMS 5719, AMS 5718

• British Standards (BS): BS S151, BS S159, BS HR 650

• Engine Manufacturers: Rolls Royce MSRR 6503, MSRR 6504, AECMA FE-PM37

2. Chemical Composition & Metallurgical Purity

The performance of M152 depends entirely on its chemical balance. By sourcing from European and British mills, we ensure the nitrogen levels are precisely controlled to prevent grain coarsening during high-temperature service.

3. Mechanical & Physical Properties

M152 is selected for applications where standard steels fail under thermal stress. It is typically supplied in the Hardened and Tempered (H&T) condition.

Mechanical Strength (Typical)

• Tensile Strength: 1034 1150 MPa (150 167 ksi)

• Yield Strength (0.2% Offset): 827 MPa Minimum (120 ksi)

• Elongation: 15% - 18%

• Reduction of Area: 45% Minimum

• Hardness: 300 370 HBW (Rockwell C 32-39)

Physical Characteristics

• Density: 7.75 $g/cm^3$

• Specific Heat: 460 $J/kg\cdot K$

• Modulus of Elasticity: 200 $GPa$

• Maximum Service Temperature: 560C (1040F) for continuous operation.

4. Supply Range & Value-Added Services

At Mahadev Steel India, we don't just supply metal; we provide engineered solutions. Our massive inventory ensures that your production line never stops.

• Diameter Range: 50 mm to 300 mm (Ready Stock).

• Forms: Hot Rolled, Forged, Bright Ground, and Rough Turned.

• Cutting-to-Size: Our facility features heavy-duty CNC Band Saw machines. Whether you need a 50mm blank or a 3-meter bar, our tolerance on cutting is among the best in India.

• Origin: 100% Traceable European/UK/Taiwanese material.

• Testing & Inspection: * Ultrasonic Testing (UT): 100% tested for internal defects.

  • PMI Testing: Positive Material Identification to ensure chemical accuracy.

  • Certification: Full Mill Test Certificate (MTC) as per EN 10204 3.1.

5. High-Impact Applications

Our M152 round bars are utilized in environments where failure is not an option.

Aerospace & Defense

M152 is the "workhorse" of the jet engine. It is used for compressor blades, turbine discs, shafts, and casing bolts. Its high strength-to-weight ratio makes it ideal for structural aircraft components.

Power Generation

In land-based gas and steam turbines, M152 is used for high-temperature fasteners, bolting, and expansion rings. It withstands the constant thermal cycling of modern power plants.

Oil & Gas

Used in high-pressure, high-temperature (HPHT) downhole tools and mechanical gears where high hardness and corrosion resistance are required simultaneously.

6. Why Partner with Mahadev Steel India?

Choosing Mahadev Steel India means choosing reliability. Our status as one of India's biggest importers allows us to offer:

1. Competitive Pricing: Direct import from Europe and Taiwan eliminates middlemen.

2. No-China Policy: We guarantee the highest metallurgical grade, avoiding the risks of inferior Chinese "equivalents."

3. National Logistics: Rapid shipping to Mumbai, Pune, Bangalore, Chennai, Delhi, Hyderabad, and all major industrial SEZs.

4. Expert Consultation: Our technical team can assist you in understanding the heat treatment and machining nuances of M152.

M152 (Jethete) Round Bars | Mahadev Steel India

Mahadev Steel India is a premier global importer and the largest stockholder of M152 (Jethete) round bars in India. Specializing in the aerospace, defense, and power sectors, we bridge the gap between world-class European metallurgy and domestic industrial demand.

Our sourcing strategy is built on Quality and Integrity. We exclusively import from the finest mills in Europe, Britain, and Taiwan. To maintain the high safety standards required by aviation and defense, we strictly adhere to a "No-China Origin" policy, ensuring that every bar we supply possesses the metallurgical purity and fatigue life required for mission-critical components.

1. What is Jethete M152?

Jethete M152 is a nitrogen-strengthened, 12% chromium martensitic stainless steel. It is specifically designed to offer a unique combination of high tensile strength, excellent notch toughness, and superior creep-rupture properties at elevated temperatures. Unlike standard 400-series stainless steels, M152 maintains its mechanical integrity even when subjected to continuous service temperatures up to 560C (1040F).

Global Standards & Equivalents

We supply material that meets or exceeds the following international specifications:

• UNS Number: S64152

• British Standards: BS S151, BS S159, BS HR 650

• Aerospace Material Specs: AMS 5719, AMS 5718

• European / DIN: 1.4933, 1.4939, X12CrNiMoV12-2

• Engine Manufacturers: Rolls Royce MSRR 6503, MSRR 6504, AECMA FE-PM37

2. Technical Specifications & Chemical Composition

The addition of Nickel, Molybdenum, and Vanadium, combined with precise Nitrogen control, gives M152 its signature performance. By sourcing from UK and European mills, we ensure the tightest control over tramp elements and inclusions.

3. Mechanical & Physical Properties

M152 is valued for its hardenability and its ability to remain stable under thermal cycling.

• Tensile Strength ($R_m$): 1034 1150 MPa

• Yield Strength ($R_{p0.2}$): 827 MPa (Minimum)

• Elongation: 15% 20%

• Hardness: 300 360 HBW (Typically 32-38 HRC)

• Density: 7.75 $g/cm^3$

• Thermal Conductivity: 24 $W/m\cdot K$ (at 100C)

4. Strategic Inventory & Capabilities

As one of the biggest importers in India, Mahadev Steel India offers unmatched availability and processing capabilities.

• Size Range: 50 mm to 300 mm Diameter (Ready Stock).

• Condition: Hardened & Tempered (H&T), Annealed, or Bright Ground.

• Cut-to-Size Service: Equipped with high-precision CNC Band Saws, we offer customized lengths and blanks to reduce your machining time and scrap rate.

• National Supply: Seamless logistics network delivering to Mumbai, Chennai, Bangalore, Delhi, Hyderabad, Pune, and beyond.

5. Industry Applications

Our Jethete M152 round bars are the preferred choice for sectors where material failure is not an option.

Aerospace & Defense

M152 is a "workhorse" grade for jet engines. It is used for compressor blades, turbine discs, shafts, and casing bolts. Its high strength-to-weight ratio makes it ideal for structural components in aircraft and missiles.

Power Generation

In gas and steam turbines, M152 is used for high-temperature fasteners, bolting, and expansion rings. It provides the necessary resistance to oxidation and creep-rupture in high-pressure environments.

Oil & Gas

Used in specialized downhole tools and mechanical gears that require high hardness and resistance to thermal stress.

6. Quality Assurance: The Mahadev Advantage

When you source from Mahadev Steel India, you receive more than just steelyou receive a guarantee of performance.

1. Direct Imports: Sourced from Europe, Britain, and Taiwan to eliminate middle-man costs.

2. 100% Traceability: Every bar is linked to an EN 10204 3.1 Mill Test Certificate.

3. Strict Testing: Material undergoes Ultrasonic Testing (UT) and PMI Testing to ensure it is free from internal defects and matches the required chemistry.

4. No-China Policy: We provide only premium-melt material, ensuring higher fatigue life compared to cheaper alternatives.