✓ Available from European Stock

• EN 10269
• EN 10204 3.1
• Round Bars
• Worldwide Delivery
• Cut-to-Length Service
• Fast Quotations within 24 Hours

1.7709 Round Bar Supplier

Looking for 1.7709, 21CrMoV5-7 +QT or EN 10269 round bars?

WTE PowerSteel is a European supplier and stockholder of 1.7709 (21CrMoV5-7 +QT) chromium-molybdenum-vanadium alloy steel for demanding high-temperature applications. We supply certified round bars with full material traceability, EN 10204 3.1 certification and fast worldwide delivery.

1.7709 is a quenched and tempered creep-resistant alloy steel developed for components operating under high mechanical loads and elevated temperatures. The chromium, molybdenum and vanadium alloying elements provide an excellent combination of mechanical strength, creep resistance and long-term structural stability, making the material a preferred choice for critical bolting and power generation equipment. It is specified in EN 10269 for fasteners operating at elevated temperatures.

Designed for continuous service at temperatures up to approximately 550°C, 1.7709 offers excellent fatigue resistance, dimensional stability and long-term reliability in steam turbines, gas turbines, pressure vessels and petrochemical installations.

Why Choose 1.7709?

Compared with conventional alloy steels, 1.7709 (21CrMoV5-7) provides significantly improved creep resistance and high-temperature strength while maintaining excellent toughness after quenching and tempering. It is one of the most widely specified European materials for turbine bolts, stud bolts and pressure equipment operating at elevated temperatures.

Key Benefits

• Excellent creep resistance
• High tensile and yield strength
• Outstanding fatigue resistance
• Excellent thermal stability
• Good oxidation resistance
• Excellent dimensional stability
• Long service life at elevated temperatures
• Good machinability after heat treatment
• Ideal for critical bolting applications
• Reliable performance up to approximately 550°C

Typical Applications

1.7709 is commonly used for manufacturing:

• Steam turbine bolts
• Stud bolts
• High-temperature fasteners
• Gas turbine components
• Pressure vessel bolting
• Boiler bolts
• Heat exchanger fasteners
• Valve stems
• Flanges
• Petrochemical equipment
• Precision CNC machined components
• High-temperature engineering components

Industries Served

Our customers use 1.7709 in:

• Power Generation
• Steam Turbines
• Gas Turbines
• Petrochemical
• Oil & Gas
• Chemical Processing
• Heavy Engineering
• Energy Equipment Manufacturing

Available Product Forms

We supply:

• Round Bars
• Peeled Bars
• Bright Bars
• Hot Rolled Bars
• Cut-to-Length Pieces

Available diameters and lengths upon request.

Inspection & Certification

Material can be supplied with:

• EN 10269
• EN 10204 3.1 Inspection Certificate
• EN 10204 3.2
• AD 2000
• PED 2014/68/EU
• PMI (Positive Material Identification)
• Ultrasonic Testing (UT)
• Customer-specific inspection requirements

International Designations

This material is also known as:

• 1.7709
• 21CrMoV5-7
• EN 10269 21CrMoV5-7
• AFNOR 20CDV5.7
• PN 21HMF
• ASTM A193 Grade B16 (closest equivalent)

Frequently Asked Questions

What is 1.7709 steel?

1.7709 (21CrMoV5-7) is a chromium-molybdenum-vanadium creep-resistant alloy steel designed for fasteners and components operating at elevated temperatures. It combines high mechanical strength with excellent creep resistance and long-term structural stability.

What temperature can 1.7709 withstand?

1.7709 is commonly used for continuous service at temperatures up to approximately 550°C, depending on the application and operating conditions.

Is 1.7709 suitable for high-temperature bolting?

Yes. 1.7709 is one of the most widely used European materials for high-temperature bolts, stud bolts and pressure vessel fasteners used in steam turbines, gas turbines and power generation equipment.

Do you stock 1.7709 round bars?

Yes. WTE PowerSteel supplies 1.7709 (21CrMoV5-7 +QT) round bars from European stock. Please contact our sales team for current stock availability, dimensions and delivery times.

Can you supply cut-to-length material?

Yes. We supply both full-length bars and precision cut-to-length pieces according to customer requirements.

Why Choose WTE PowerSteel?

WTE PowerSteel is a European supplier and stockholder of high-temperature alloy steels for power generation, steam turbines, gas turbines and petrochemical industries. We supply 1.7709 (21CrMoV5-7 +QT) round bars with full material traceability, EN 10204 3.1 certification, fast quotations, cut-to-length service and worldwide delivery.