1.4958 (X5NiCrAlTi31-20) Steel — Basic Information
- EN Standard: EN 10095 | DIN 1.4958 | X5NiCrAlTi31-20
- Equivalent Grade: Incoloy 800HT / UNS N08811
- Max Operating Temp: 980°C (1800°F) continuous
- Ni Content: 30.0–32.5% | Cr: 19.0–22.0%
- Tensile Strength: 500–750 MPa | Rp0.2: ≥170 MPa
- Certifications: ISO 9001:2015 | EN 10204 3.1/3.2 MTC
- Lead Time: 20–35 days standard | 10–15 days expedited
- MOQ: No minimum — single piece accepted
- Weight Range: 30 KG – 30,000 KG per piece
- Shipping: FOB Shanghai / CIF / DDP worldwide
1.4958 (X5NiCrAlTi31-20) Forged Round Bars
1.4958 (X5NiCrAlTi31-20) Seamless Rolled Rings
1.4958 (X5NiCrAlTi31-20) Forged Sleeves & Housings
About 1.4958 (X5NiCrAlTi31-20) Heat Resistant Forging Steel
Product Grade: 1. 4958 (X5NiCrAlTi31-20), also known as X5NiCrAlTi3120 / X5NiCrAlTi31.20, performance-equivalent to Incoloy 800HT (UNS N08811).
Jiangsu Liangyi is a professional ISO 9001:2015 certified forging manufacturer located in Jiangyin, Jiangsu, China. We specialize in 1.4958 (X5NiCrAlTi31-20) forging parts. Founded in 1997, we have 27 years of experience.Our factory covers an area of an 80,000 m² and has an annual production capacity of 120,000-ton.Our clients are petrochemical, power generation, nuclear, and oil & gas industries.
1.4958 is a high-alloy austenitic heat-resistant steel renowned for good resistance to high-temperature oxidation , great corrosion resistance, and stable mechanical properties at continuous working temperatures up to 980°C (1800°F). The high content of nickel and chromium and the stabilization of aluminum and titanium makes it the best material for parts in bad high-temperature and corrosive environments.
See Full Material GradesOur Certifications & Accordance Standards
All 1.4958 forging parts meet international standards as below:
China-Made 1.4958 (X5NiCrAlTi31-20) Forged Product
We offer a full range of custom 1.4958 (X5NiCrAlTi31-20) forged steel products from 30 KG to 30,000 KG per piece, manufactured per international standards and your custom drawings:
1.4958 Forged Steel Bars & Shafts
Round bars, square bars, flat bars, rectangular bars, step shafts, gear shafts, turbine shafts, and bespoke shaped rods.
1.4958 Seamless Rolled Forged Rings
Seamless rolled rings, gear rings, flanges, gasket seats, slewing bearing rings, and contoured custom rolled rings.
1.4958 Forged Sleeves, Housings & Hollow Bars
Hubs, housings, shells, sleeves, bushes, casings, seamless hollow bars, and custom tubular components.
1.4958 Forged Discs, Plates & Blocks
Forged discs, disks, blocks, plates, blanks, and custom flat forgings.
1.4958 Forged Pipes, Tubes & Pressure Components
Seamless pipes, tubes, tubing, piping shells, casings, barrels, tube sheets, baffle plates, nozzles, and channel flanges for boilers, heat exchangers, and pressure vessels.
See Full Product RangeOther Heat-Resistant Steel Forging Grades
we also make other heat-resistant and high-alloy forged parts besides 1.4958. These parts are:
1.4958 (X5NiCrAlTi31-20) Production Standards
All of our 1.4958 (X5NiCrAlTi31-20) forging parts are manufactured and tested in accordance with international industry standards, including but not limited to:
- EN 10095:1999 — Heat Resisting Steels and Nickel Alloys
- EN 10297-2:2005 — Seamless circular steel tubes for mechanical and general engineering purposes
- EN 10088-1:2005 — Stainless steels — List of stainless steels
- ASTM A370, ASTM E8, ISO 6892-1 — Mechanical Testing Standards
- API 6A, ASTM A388/388M — Non-Destructive Testing Standards
- NORSOK Standard Accordance (Upon Request)
We provide complete Mill Test Certificate (MTC) EN 10204 3.1 / 3.2 for all delivered 1.4958 forged parts, ensuring full traceability from raw material melting to final delivery.
See Our Production & Testing EquipmentChemical Composition of 1.4958 (X5NiCrAlTi31-20) Steel
We strictly control the chemical composition of every 1.4958 (X5NiCrAlTi31-20) steel, so that all of our parts can meet EN 10095 standard ranges.
| Element | Standard Content Range |
|---|---|
| Carbon (C) | 0.03–0.08% |
| Nickel (Ni) | 30.0–32.5% |
| Chromium (Cr) | 19.0–22.0% |
| Aluminum (Al) | 0.20–0.50% |
| Titanium (Ti) | 0.20–0.50% |
| Manganese (Mn) | Max. 1.50% |
| Silicon (Si) | Max. 0.70% |
| Phosphorus (P) | Max. 0.015% |
| Sulfur (S) | Max. 0.010% |
| Cobalt (Co) | Max. 0.50% |
| Copper (Cu) | Max. 0.50% |
| Niobium (Nb) | Max. 0.10% |
| Nitrogen (N) | Max. 0.030% |
| Balance | Iron (Fe) |
Mechanical Properties of 1.4958 (X5NiCrAlTi31-20) Forged Bars
Mechanical properties are fully tested and guaranteed in +A (solution annealed) condition per EN 10095:
| Mechanical Property | Standard Guaranteed Value |
|---|---|
| Tensile Strength (Rm) | 500–750 MPa |
| 0.2% Proof Strength (Rp0.2) | ≥170 MPa |
| Min. Elongation at Fracture (A) | ≥30% |
| Min. Elongation at Fracture (AT) | 30–35% |
| Transverse Impact Energy (KV) at +20°C | ≥80 J |
| Longitudinal Impact Energy (KV) at +20°C | ≥120 J |
All mechanical testing is performed on qualification test coupons (QTC) per ASTM A370, ASTM E8, or ISO 6892-1. Hardness testing follows ISO 6506-1/ASTM E10 and CVN impact testing accordance with ASTM E23.
1.4958 vs Incoloy 800HT vs 1.4876 — Grade Comparison
Engineers frequently compare 1.4958 (X5NiCrAlTi31-20) with similar high-temperature alloys.The main differences are listed below to help you choose the right grade.
| Property | 1.4958 (X5NiCrAlTi31-20) | Incoloy 800HT (N08811) | 1.4876 (X10NiCrAlTi32-21) |
|---|---|---|---|
| Standard | EN 10095 | ASTM B409 / B407 | EN 10095 |
| C Content | 0.03–0.08% | 0.06–0.10% | 0.05–0.12% |
| Ni Content | 30.0–32.5% | 30.0–35.0% | 30.0–34.0% |
| Cr Content | 19.0–22.0% | 19.0–23.0% | 19.0–23.0% |
| Al Content | 0.20–0.50% | 0.25–0.60% | 0.15–0.45% |
| Ti Content | 0.20–0.50% | 0.25–0.60% | 0.15–0.50% |
| Max Use Temp. | 980°C (1800°F) | 980°C (1800°F) | 900°C (1650°F) |
| Tensile Strength | 500–750 MPa | ≥520 MPa | 500–800 MPa |
| Main Standard | EN (European) | ASTM / UNS (American) | EN (European) |
| Main Uses | Ethylene furnace, nuclear, superheater | Ethylene furnace, petrochemical, heat exchanger | Industrial furnace, lower-temp HT parts |
* Note: 1.4958 and Incoloy 800HT are performance-equivalent and interchangeable for most uses. Material choices should be confirmed against your specific project standard and inspection requirements.
1.4958 High-Temperature Mechanical Properties
1.4958 (X5NiCrAlTi31-20) has good properties at room temperature and good mechanical performance at high temperatures. The main reference data are as follows.
| Test Temperature | Rp0.2 Proof Strength (MPa) | Rm Tensile Strength (MPa) | Elongation A (%) |
|---|---|---|---|
| Room Temp (20°C) | ≥170 | 500–750 | ≥30 |
| 400°C | ~140 | ~450 | ≥25 |
| 600°C | ~120 | ~400 | ≥25 |
| 800°C | ~100 | ~300 | ≥30 |
| 900°C | ~60 | ~180 | ≥35 |
⚠️ The following data are for reference only. Actual high-temperature mechanical properties should be confirmed by testing on the specific heat and product form per your project requirements. Please contact us for project-specific high-temperature testing services.
Main Industry Applications of 1.4958 (X5NiCrAlTi31-20) Forging Parts
Thanks to its great high-temperature performance and corrosion resistance, 1.4958 (X5NiCrAlTi31-20) forging parts are widely used in high-end industrial fields worldwide:
- Ethylene furnace quench boilers and hydrocarbon cracking equipment (petrochemical industry)
- Valves, fittings, and parts exposed to high-temperature corrosive attack
- Industrial furnaces and continuous heat-treating equipment
- Chemical and petrochemical processing plants
- Superheaters and reheaters in thermal power plants
- Pressure vessels, heat exchangers, and high-temperature reactors
- Nuclear power reactor coolant pump systems and nuclear island parts
- Oil and gas drilling, wellhead, and production equipment
- Turbomachinery, gas turbines, and centrifugal compressor parts
Common Custom 1.4958 Forged Parts
- Valve bodies, bonnets, stems, balls, seat rings, and discs (gate valves, ball valves, check valves, butterfly valves)
- Wellhead equipment: casing heads, tubing heads, casing hangers, tubing spools, and spacer spools
- Nuclear power components: reactor coolant pump impellers, casings, and seal chambers
- Flow measurement parts: flow meter bodies, venturi cone meter blocks, and oil measurement valve spools
- Turbomachinery parts: turbine blades, compressor impellers, and turbo shafts
- Pump parts: pump casings, impellers, shafts, housings, and wear rings
- Pressure vessel parts: nozzles, tube sheets, baffle plates, and channel flanges
1.4958 (X5NiCrAlTi31-20) Forging Parts — Global Cases
We have supplied custom 1.4958 forging parts to clients of over 50 countries such as North America, Europe, Middle East, Southeast Asia, and Africa:
Case 1: Ethylene Furnace Quench Boiler — Thailand Petrochemical Project
A Fortune 500 petrochemical company in Thailand required heat- and corrosion-resistant forged parts for a 1.2 million t/year ethylene plant quench boiler system, operating at up to 980°C (1800°F) under severe hydrocarbon corrosive conditions. We provide custom 1.4958 seamless forged sleeves, pipes and tube sheets which are made with triple melting (VIM+ESR+VAR). They meet EN 10095 standard. These parts have been working well for more than 4 years without any problems.
Case 2: Nuclear Power Reactor Coolant Pump Parts — China Nuclear Power Project
A large domestic nuclear power plant need highly reliable forgings for the reactor coolant pump system. They need materials that have good impact toughness and resistance to radiation.We provided custom X5NiCrAlTi31-20 forged impellers and pump casings by double melting (VIM+VAR). All parts went through 100% ultrasonic testing and full mechanical tests. All products passed third-party NDE inspection and have run safely for more than 3 years.
Case 3: Power Plant Superheater Fittings — German Thermal Power Project
A large 600MW thermal power plant in Germany needed replacement forged fittings for superheater and reheater. These parts have good high-temperature creep resistance. We provided 1.4958 forged pipes, elbows and nozzles in accordance with EN 10297-2 under strict heat treatment control. All products passed UT, PT and RT testing and have worked reliably for more than 2 years. They also make the power unit run longer before maintenance.
Case 4: High-Pressure Hydrogenation Reactor Flanges — Saudi Arabia Refinery Project
A large refinery in Saudi Arabia need high-pressure, corrosion-resistant flanges for a 3 million tons/year hydrogenation reactor system. The system works under high temperature, high pressure and corrosive conditions. We supplied custom X5NiCrAlTi31-20 flanges which meet API 6A standard and have a very low sulfur and phosphorus content. These flanges have been working stably for more than 3 years without leakage and no corrosion.
Melting Process & Strict Quality Control
In order to get ultra-high purity, uniform structure and stable performance of our 1.4958 forging parts, we use advanced melting methods and quality control at all stages for every order:
Advanced Melting Method
- Double Melting (VIM+VAR): double Melting (VIM+VAR): Vacuum Induction Melting + Vacuum Arc Remelting — for standard high-performance industrial uses
- Triple Melting (VIM+ESR+VAR): VIM + Electroslag Remelting + VAR — for nuclear power, aerospace, and critical petrochemical equipment
All 1.4958 forging materials use a guaranteed forging ratio ≥ 4:1, ensuring fully homogeneous internal structure free from blisters, cracks, and harmful slag inclusions. Heat treatment (solution annealing + stabilization) is strictly controlled to get the best microstructure.
Full-Process Non-Destructive Testing (NDE)
We will inspect all 1.4958 forging parts before delivery as per API 6A, ASTM A388/388M:
- Surface Inspection: All parts are 100% surfacechecked.
- Ultrasonic Testing (UT): 100% UT after heat treatment, according to ASTM A388/388M.
- Magnetic Particle Testing (MT): Full surface inspection for magnetic parts.
- Dye Penetrant Testing (PT): Testing with visible and fluorescent penetrants.
- Radiographic Testing (RT): for critical main parts.
Other Testing
- Tensile, Charpy V-notch impact, and hardness tests (macro/micro Vickers)
- Macro & micro metallurgical tests, grain size check
- Chemical composition analysis and material traceability
- High-temperature mechanical property tests
- Intergranular corrosion test
Our Custom Forging Steps
We provide One-stop custom forging service from raw material melting to finish machining. The detailed steps are as below.
Inquiry & Quotation
Send drawings and requirements — detailed quotation within 24 hours
Order Confirmation
Confirm specs, delivery time, and sign formal contract
Raw Material Melting
Melt per standard with full composition testing and certification
Forging & Heat Treatment
Open die forging, ring rolling, and precise heat treatment
Testing & Inspection
100% NDE, mechanical testing, and size inspection
Machining & Delivery
Optional CNC machining, anti-rust packaging, on-time global delivery
Packaging & Global Delivery
We do well in packaging export parts. The packaging methods are listed below:
Standard Export Packaging
- Anti-rust: Coated with anti-rust oil and wrapped in VCI paper.
- Waterproof packaging: Cover parts with plastic film and waterproof cloth.
- Outer packaging: use wooden cases/pallets for sea or air transport.
- Custom packaging: any package is acceptable as per client's request.
Delivery Details
- Standard lead time: 20–35 days for custom orders.
- Special lead time: 10–15 days for urgent orders.
- Shipping terms: FOB Shanghai, CIF, EXW, DDP.
- Global service: Ship to all major ports worldwide
- Work time: Mon–Fri, 08:00–17:30 (GMT+8).
Inquiry Checklist for Faster Quotation
To get a fast quotation, please give us your detailed information as below:
- Product drawings (2D/3D) with size tolerances and technical manuals
- Material grade (1.4958 / X5NiCrAlTi31-20) and melting requirements
- required quantity of each parts
- Heat treatment method
- Machining need (rough machined / semi-finished / finish machined)
- Testing and inspection standard requirements
- Certificate requirements (EN 10204 3.1 / 3.2, third-party inspection)
- delivery time
- Shipping terms and destination port
Trusted by Buyers from 50+ Countries Worldwide
Why Choose Jiangsu Liangyi for Your 1.4958 Forging parts?
- Experienced Forging Manufacturer: Founded 1997, ISO 9001:2015 certified, 27 years of experience in heat-resistant steel and high-alloy forgings
- Full Custom Capability: One-stop service from steel melting to machining, fully custom per your drawings and specifications.
- Large Production Capacity: 80,000 m² factory, 120,000-ton annual capacity, single piece weight 30 KG–30,000 KG.
- Advanced Equipment: 2,000T/4,000T/6,300T hydraulic forging presses, 1–5T electro-hydraulic forging hammers, 1–5M seamless ring rolling machines, 10 heat treatment furnaces.
- Strict Quality Control: We can do all tests in our own testing lab, including non-destructive testing, chemical testing, mechanical testing and metallographic testing. Every product is inspected.
- Global Supply Experience: We have provided parts to more than 50 countries such as North America, Europe, Middle East, Southeast Asia and Australia.
Frequently Asked Questions About 1.4958 Forging Parts
What is 1.4958 (X5NiCrAlTi31-20) steel?
1.4958 (X5NiCrAlTi31-20) is a high-alloy heat-resistant steel. It has high nickel (30–32.5%) and chromium (19–22%) content with aluminum and titanium. It has very good high-temperature oxidation resistance, corrosion resistance, and stable mechanical properties up to 980°C (1800°F).It is widely used in very high-temperature industrial environments.
What is the equivalent grade of 1.4958 steel?
1.4958 (X5NiCrAlTi31-20) has similar performance to Incoloy 800HT / Alloy 800HT (UNS N08811). It has similar high-temperature stability, oxidation resistance, and corrosion resistance. It is often used for ethylene furnaces, power plant superheaters, and heat exchangers.
What standards do your 1.4958 forged parts meet?
Our 1.4958 forged parts meet EN 10095, EN 10297-2, EN 10088-1, ASTM A370, API 6A, and NORSOK standards. We also meet custom's other requirement and third-party inspection.
Can you provide the Mill Test Certificate of 1.4958 forging?
Yes. We can provide EN 10204 3.1 Mill Test Certificates to clients. These certifications include heat number traceability, chemical composition, mechanical properties, and heat treatment records. EN 10204 3.2 certificates with BV, SGS, or TUV third-party inspection are available on request.
What is the lead time for 1.4958 forging parts?
The normal lead time for 1.4958 forged parts is 20–30 days, and the lead time for urgent orders is 10–15 days.
What is the minimum order quantity of 1.4958 forged parts?
We support orders from one-piece sample order to mass production.
Can you provide final machining for 1.4958 forged parts?
Yes. We provide one-stop service from forging to finish machining. We use CNC lathes, milling machines, boring machines, and grinding machines. We can make rough-machined, semi-finished, or fully finished products according to your drawing.
Do you supply 1.4958 forging parts to European and Middle East buyers?
Yes. We export to more than 50 countries, including Germany, Netherlands, UK, UAE, Saudi Arabia, and others.
Contact Us for Custom 1.4958 Forging Solutions
📧 Inquiry Email: [email protected]
📞 Phone: +86-510-86107550
💬 WhatsApp: +86-13585067993 (Chat Directly)
🌐 Official Website: www.jnmtforgedparts.com
📍 Factory Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China (Postal Code: 214400)
🕐 Working Hours: Monday–Friday 08:00–17:30 (GMT+8)
Inquire About 1.4958 (X5NiCrAlTi31-20) Forging Parts Today
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