1.6946 / 30CrMoNiV5-11 Forging Steel Supplier for Turbine, Valve and Heavy Forging Projects
Product Snapshot for Buyers and Engineers
This page provides a detailed overview of 1.6946 / 30CrMoNiV5-11 forging steel, including material identity, typical applications, main properties, applicable standards and quotation requirements.
Eestablished in 1997, Jiangsu Liangyi Co., Limited is an ISO 9001:2015 certified China open die forging and seamless rolled ring manufacturer. Our factory covers 80,000 m² and has production capacity of 120,000 tons, as well as a 6300-ton hydraulic forging press. We produce custom 1.6946 30CrMoNiV5-11 creep resisting steel forgings up to 30 tons per piece. We supplied clients in more than 50 countries and support TÜV, DNV-GL, ABS, LR, BV, and EN 10204 3.1/3.2 third-party certifications.
Request a Custom Quote for 1.6946 Forgings Contact Us for the Material DatasheetQuick Answer: What is 1.6946 / 30CrMoNiV5-11 forging steel?
1.6946 (30CrMoNiV5-11) is a low-alloy creep resisting forging steel used for heavily loaded parts such as turbine rotor shafts, seamless rolled rings, valve spindles and other forged parts that must keep stable strength, toughness and dimensional reliability under elevated temperature conditions.
- Best known for: creep resistance, through-hardening performance, fatigue strength and heavy-section forging reliability.
- Common buyer intents: datasheet review, composition check, mechanical property validation, heat treatment guidance, PED/API documentation and custom quote request.
- Suitable industries: steam turbines, gas turbines, power generation, industrial turbomachinery, oil & gas and other extreme industrial conditions.
Typical Buyer Questions
Standards, Documentation and Supply Support
Material Overview: 1.6946 30CrMoNiV5-11 Creep Resisting Steel
1.6946, also known as 30CrMoNiV5-11 (alternate spellings: 30CrMoNiV511, 30CrMoNiV5.11), is a low-alloy creep resisting steel. It is made and heat treated according to SEW 555 (1984) for heavy forgings used in turbine and generator production. This material has excellent creep resistance, stable mechanical properties, and high fatigue strength, and it is used under medium-to-high temperature (up to 500°C) and high-pressure working conditions.
As a top China supplier of 1.6946 forging steel, we make custom forged parts for steam and gas turbine rotor shafts, turbine blades, valve spindles, high-strength fasteners, seamless rolled rings, and other heavy-duty parts for power generation, oil & gas, and industrial turbomachinery.
Main Advantages of 1.6946 30CrMoNiV5-11 Forging Steel
Compared with standard alloy steels such as 42CrMo4 (1.7225) and 34CrNiMo6 (1.6582), 1.6946 (30CrMoNiV5-11)forging material performs significantly better under extreme high-temperature service conditions:
- Superior High-Temperature Creep Resistance: It keeps its yield strength and creep performance stable at high temperatures, up to 500°C, which is 100–150°C higher than regular low-alloy steels.This makes it the best material for steam turbine and gas turbine parts.
- Great Through-Hardening Performance: Excellent Through-Hardening Performance: Consistent through-hardening capability for heavy-section forgings (up to 1500mm thickness), ensuring consistent mechanical properties from surface to core of large rotor shafts and heavy seamless rolled rings.
- High Fatigue & Impact Toughness: Improved alloy composition with vanadium microalloying has excellent low-temperature impact resistance and anti-fatigue performance, reducing failure risk under cyclic loading in rotating equipment.
- Ultra-Low Purity Control: Our 30t EAF + LF + VOD steel melting process ensures ultra-low phosphorus (≤0.01%) and sulfur (≤0.007%) content, minimizing non-metallic inclusions and improving material stability and lifetime.
- Wide Global Standard Compliance: Meeting European EN, German DIN, ASTM, and API standards and it is the best choice material for projects in Europe, North America, the Middle East, and Asia Pacific.
Global Regional Compliance and Supply Support
Our 1.6946 30CrMoNiV5-11 forgings are made to meet the specific requirements of global regional markets, making sure they full meet local project standards and customer needs:
European Union (EU) – PED & CE Certified 1.6946 Forgings
- Full meeting Pressure Equipment Directive (PED) 2014/68/EU, with CE marking and Module H/H1 certification support for pressure-containing parts.
- Made based on strict DIN and EN standards, with EN 10204 3.1/3.2 inspection certificates provided for every order
- Third-party inspection support by TÜV, DNV-GL, LR, and BV for European power plant operators, Polish turbine manufacturers, and Italian valve suppliers
North America (USA & Canada) – API 6A Eligible 30CrMoNiV5-11 Forgings
- Material properties meet ASTM alloy steel requirements for power generation and oil & gas applications
- API 6A monogram eligible forgings available for wellhead and gas compressor parts used in US oilfield service companies and Canadian power generation EPC firms
- Full material traceability from steel melting to final machining, meeting North American quality management requirements
Middle East & North Africa (MENA) – NACE MR0175 Compliant 1.6946 Forgings
- High-purity material control for sour service oil and gas applications, meeting NACE MR0175/ISO 15156 requirements
- Proven supply record for more than 12 large thermal power plant and gas processing projects in Saudi Arabia, UAE, Oman, and Kuwait, serving Saudi Aramco-approved vendors and UAE EPC contractors
- Heat-resistant and corrosion-resistant performance used to high-temperature desert operating conditions
Asia Pacific & Southeast Asia – JIS Compliant 30CrMoNiV5-11 Forgings
- Meeting JIS G 4105 standards for Japanese and Korean power equipment OEMs
- Many supply experience for more than 20 thermal power plant projects in Thailand, Vietnam, Indonesia, and Malaysia, partnering with Southeast Asian power plant developers
- Adjustable production capacity and fast delivery lead times (as short as 20 days for urgent orders) for Southeast Asia infrastructure projects
Available Forged Product Forms of 1.6946 30CrMoNiV5-11 Steel
We make custom 1.6946 30CrMoNiV5-11 forging steel products in a full range of shapes and dimensions, strictly according to international standards and customer drawings:
- Forged Bars & Rods: Round bars, square bars, flat bars, rectangular bars, and hollow bars, with maximum diameter up to 2000mm, single-piece weight up to 30 tons
- Seamless Rolled Rings: Forged rings, gear rings, guide rings, seal rings, labyrinth rings, and contoured rolled rings, with maximum outer diameter up to 6 meters
- Forged Shafts & Rotors: Steam turbine rotor shafts, gas turbine shafts, step shafts, valve spindles/stems/rods, with maximum length up to 15 meters, maximum diameter up to 1800mm
- Turbine & Valve Components: Turbine blades, vanes, valve seats, valve bodies, bonnets, and closure parts for high-temperature power station valves
- Heavy Forgings & Custom Components: Hubs, housings, shells, sleeves, bushes, discs, plates, blocks, flanges, tube sheets, and double-ended studs/bolts/fasteners
View our full range of forged products or advanced forging equipment to learn more about our production capabilities.
Key facts at a glance
- Material names: 1.6946, 30CrMoNiV5-11, 30CrMoNiV511, 30CrMoNiV5.11
- Main applications: turbine rotor shafts, turbine parts, valve spindles, seamless rolled rings, heavy forgings
- Service focus: strength, toughness and creep resistance for high temperature duty
- Manufacturing scope: open die forgings and rolled rings with custom machining and inspection support
Chemical Composition of 1.6946 30CrMoNiV5-11 Steel (SEW 555 Standard)
The chemical composition of our 1.6946 30CrMoNiV5-11 forging steel is strictly controlled within the SEW 555 standard range, making sure it has consistent material performance.
| Chemical Element | Content Range (Weight %) | Chemical Element | Content Range (Weight %) |
|---|---|---|---|
| Carbon (C) | 0.28 - 0.34 | Nickel (Ni) | 0.50 - 0.75 |
| Manganese (Mn) | 0.30 - 0.80 | Molybdenum (Mo) | 1.00 - 1.20 |
| Silicon (Si) | ≤ 0.15 | Vanadium (V) | 0.25 - 0.35 |
| Chromium (Cr) | 1.10 - 1.40 | Aluminum (Al) | ≤ 0.010 |
| Phosphorus (P) | ≤ 0.010 | Sulfur (S) | ≤ 0.007 |
Mechanical Properties of 30CrMoNiV5-11 Forged Steel
Our 1.6946 30CrMoNiV5-11 forged steel has great mechanical properties after quenching and tempering heat treatment. We provide the test results for every production batch:
Room Temperature Mechanical Properties (20°C, Transverse Test)
| Mechanical Property | Minimum/Range Value | Test Standard |
|---|---|---|
| Tensile Strength (Rm) | 700 - 850 MPa | EN ISO 6892-1 |
| Yield Strength (Rp0.2) | ≥ 550 MPa | EN ISO 6892-1 |
| Elongation (A) | ≥ 12% | EN ISO 6892-1 |
| Reduction of Area (Z) | ≥ 40% | EN ISO 6892-1 |
| Impact Toughness (KV) | ≥ 27 J (room temperature) | EN ISO 148-1 |
Elevated Temperature Yield Strength (Rp0.2 Minimum Values)
| Working Temperature | Minimum Yield Strength (MPa) | Working Temperature | Minimum Yield Strength (MPa) |
|---|---|---|---|
| 100°C | 525 | 350°C | 445 |
| 200°C | 500 | 400°C | 425 |
| 250°C | 480 | 450°C | 400 |
| 300°C | 465 | 500°C | 365 |
Heat Treatment & Machinability Guidance for 1.6946 30CrMoNiV5-11
Recommended Heat Treatment Process
- Preheating: Uniform preheating to 600-650°C before forging, with controlled heating rate to avoid thermal stress
- Forging Temperature: Initial forging temperature 1150-1200°C, final forging temperature not lower than 850°C
- Post-Forging Cooling: Controlled slow cooling in sand or furnace to prevent cracking, especially for heavy-section forgings
- Austenitizing: Heating to 930-960°C, holding time according to section thickness, followed by oil quenching or forced air cooling
- Tempering: Tempering at 650-720°C, with enough holding time to get stable mechanical properties, followed by controlled cooling
Welding & Machinability
1.6946 30CrMoNiV5-11 steel has good machinability in the hardened and tempered condition, with consistent cutting performance for conventional turning, milling, drilling, and grinding processes. For welding applications, preheating to 200-300°C is needed before welding, with post-weld stress relief heat treatment to avoid cold cracking. We provide full Welding Procedure Specification (WPS) support for customer on-site welding operations.
Global Project Case Studies of 1.6946 30CrMoNiV5-11 Forgings
Our 1.6946 30CrMoNiV5-11 forgings are used in important industries, with proven project performance in major regional markets:
Thermal Power Generation (Global Market)
1.6946 30CrMoNiV5-11 is the main material for important parts in 300MW-1000MW supercritical and ultra-supercritical steam turbine units. We have provided over 200 sets of turbine rotor shafts, blades, guide rings, and valve spindles for thermal power projects in Southeast Asia (Thailand, Vietnam, Indonesia), Europe (Germany, Poland, Hungary), and East Asia. All parts passed TÜV third-party inspection, with EN 10204 3.2 certification, and have been working stably for over 8 years.
Oil & Gas and Industrial Gas Turbines (Middle East & North America)
For Middle East oil and gas projects, our 1.6946 steel forgings are used for gas compressor rotors, double-ended studs, seal rings, and wellhead valve parts .They all meet API 6A and NACE MR0175 standards. We have supplied custom 1.6946 seamless rolled rings and fasteners for more than 12 large gas processing projects in Saudi Arabia, UAE, and Oman, with material performance fully adapted to high-temperature conditions. For North American markets, we provide PED and API compliant 1.6946 valve parts for well-known gas turbine and valve manufacturers in the USA and Canada.
Strict Quality Control & Testing for 1.6946 Forgings
Every piece of 30CrMoNiV5-11 forged steel we produce is inspected fully throughout the whole production process, from steel melting to final delivery, to make sure it meets international standards and customer requirements:
- Raw material chemical composition analysis with direct-reading spectrometer, ensuring full traceability of every heat of steel
- Tangential, axial, and radial tensile strength and notched bar impact testing for all heavy forgings
- High-temperature tensile and creep testing for turbine rotor shafts and high-temperature components
- 100% Ultrasonic Testing (UT) according to EN 10228-3 standard for all forged components
- Magnetic Particle Testing (MT), Penetrant Testing (PT), and Boroscope inspection for finished machined parts
- Metallographic examination, grain size measurement, and non-metallic inclusion rating
- Residual stress measurement and magnetic induction measurement for turbine rotor shafts
- Full dimensional inspection and visual inspection for every finished piece
- Full QA document verification, including mill test certificate (MTC) EN 10204 3.1/3.2
Equivalent Grades of 1.6946 30CrMoNiV5-11 Steel
For global project cross-reference, 1.6946 steel has the following equivalent and related grades:
- European Standard: EN 1.6946
- German Standard: DIN 30CrMoNiV5-11
- Standard Specification: SEW 555 (1984)
Explore our other high-performance forging materials for alternative solutions.
Buyer note: This page combines specification tables, certification details, application guidance, internal links and FAQ content to help engineering and purchasing teams review the material more efficiently.
Frequently Asked Questions (FAQ) About 1.6946 30CrMoNiV5-11 Steel
1.6946 (30CrMoNiV5-11) is a creep resisting steel used for manufacturing important parts in steam and gas turbines, including rotor shafts, turbine blades, valve spindles, high-strength fasteners and seamless rolled rings. It is also used in high-temperature high-pressure valves, oil and gas compressors, and industrial turbomachinery that needs long-term stable performance at temperatures up to 500°C.
1.6946 steel meets the SEW 555 (1984) standard ,and it is used for parts in turbine and generator production. It also meet European EN standards, German DIN standards, as well as ASTM and API requirements for power generation , oil and gas applications.
Yes, we can provide PED Module H/H1 certification support for 1.6946 pressure-containing forgings. We work with TÜV and DNV-GL, which are authorized notified bodies, to make sure that all parts meet the Pressure Equipment Directive (PED) 2014/68/EU.
We can produce 1.6946 seamless rolled rings with a maximum outer diameter of up to 6 meters and a maximum single-piece weight of up to 30 tons. We also accept custom sizes and weights according to clients' drawings.
Yes, we can quench and temper 1.6946 turbine parts to meet the needs of our clients in terms of mechanical properties. Our ten heat treatment furnaces can handle both small and large amounts of work.
Yes, all our 1.6946 30CrMoNiV5-11 forgings can be inspected by internationally recognized third-party institutions including TÜV, DNV-GL, ABS, LR, and BV. We provide EN 10204 3.1 mill test certificates for all orders, and EN 10204 3.2 third-party inspection according to clients' requirements.
The usual lead time for custom 1.6946 forging orders is 30-45 days for forged blanks, and 45-60 days for finished machined parts. For urgent orders, we can arrange expedited production with lead time as short as 20 days, The actual production time depends on the client's drawing, quantity, and machining requirements. We will provide a detailed production schedule with every quotation.
We send 1.6946 forgings to clients in more than 50 countries ,such as the USA, Canada, Germany, France, Italy, Spain, the UK, Saudi Arabia, the UAE, Oman, Kuwait, Japan, South Korea, Thailand, Vietnam, Indonesia, and Malaysia. Please contact our sales team to make sure that shipping is available to your area.
Yes, we provide full machining services for 1.6946 forgings, from rough machining to finish machining, according to customer drawings. We have advanced CNC machining facilities to make sure tight tolerances.
In order to get a fast quote, please send us the following information: 1) Custom drawing (2D/3D) or product specifications, 2) Required material grade (1.6946 30CrMoNiV5-11), 3) Required quantity, 4) Project application and working conditions, 5) Certification requirements (e.g., EN 10204 3.1/3.2, PED, API 6A), 6) Delivery deadline.
What to send for a fast and accurate quotation
Inquire About Custom 1.6946 30CrMoNiV5-11 Forgings
Jiangsu Liangyi is your reliable China 1.6946 30CrMoNiV5-11 forging steel manufacturer. Whether you need standard forged bars and rings, or custom heavy forgings according to your drawings, we can provide you with competitive pricing, high quality and professional technical support.
We welcome you to send your custom drawings, material specifications, required quantity, project application and certification requirements to us for a detailed and free quotation. Our sales team will respond to you within 24 working hours.
Contact Information
Inquiry Email: [email protected]
Phone/WhatsApp: +86-13585067993
Official Website: https://www.jnmtforgedparts.com
Factory Address: Chengchang Industrial Park, Jiangyin, Jiangsu, China
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