PRODUCTS

9Ni Steel Plate | 9% Nickel Steel

Overview

9Ni steel (ASTM A553/EN 10028-4) is a high-nickel quenched and tempered alloy engineered for ultra-low-temperature resilience (-196°C). Developed to meet the demands of LNG infrastructure and advanced cryogenic engineering, it combines superior strength, excellent weldability, and long-term durability in extreme environments.

Testimonials about how we provide quality services for you.

Key Features & Competitive Advantages

Unmatched Cryogenic Performance
- Impact toughness: ≥150J at -196°C (tested per ASTM E23), outperforming stainless steel (304L) and aluminum alloys (5083-O).
- Thermal stability: Low thermal expansion coefficient (9.5 µm/m·K) minimizes structural stress during temperature fluctuations.
High Strength-to-Weight Ratio
- Mechanical properties:
  - Yield strength (ReH): 585–725 MPa
  - Tensile strength (Rm): 680–820 MPa
  - Elongation (A): 18–22%
- Weight savings: 30% lighter than equivalent stainless steel structures, reducing LNG tank construction costs.
Optimized Weldability & Fabrication
- No post-weld heat treatment required (per AWS D1.1/D1.6M standards).
- Pre-qualified welding procedures for SMAW, GTAW, and SAW methods.
Corrosion & Fatigue Resistance
- Chemical composition:

• Element	• Range (%)	• Role
• Ni	• 8.5–9.5	• Enhances low-temp toughness
• C	• ≤0.13	• Reduces brittleness
• Mo	• 0.30–0.50	• Improves corrosion resistance

- Surface treatment: shot blasting + anti-rust coating (optional).

Contact Business Manager

Applications

LNG Infrastructure
- Land-based storage tanks: 150,000+ m³ capacity tanks (e.g., Algeria’s Arzew LNG Terminal).
- Marine applications: LNG carrier fuel tanks, FSRU (Floating Storage Regasification Units).
Industrial Cryogenic Systems
- Liquid nitrogen/oxygen storage, ethylene plants, aerospace cryogenic components.
Energy & Offshore

Arctic offshore platforms, LNG bunkering stations, hydrogen storage vessels.

Technical Specifications

Parameter	Details
Standards	ASTM A553 Type I/II, EN 10028-4, ASME SA-353, JIS G3127 SL9N590, CCS
Thickness	5–150 mm (customizable)
Width	1500–4500 mm
Heat Treatment	Quenching (880–900°C) + Tempering (550–600°C)
Certifications	ABS, DNV, LR, BV, KR, RINA, CCS (full NACE MR0175 compliance for sour service)

Global Project Case Studies

Statement: This is the project where our supplied products have been applied.

Project 1: Algeria’s 15,000 m³ LNG Storage Tanks (2024)
- Supplied 2,800 tons of 9Ni steel plates (thickness: 12–40 mm).
- Key challenge: achieved <20 Gauss residual magnetism for welding safety.
Project 2: South Korea’s LNG-Fueled VLCC (2023)
- Delivered 1,500 tons of 9Ni plates for dual-fuel tank construction.
- Compliance: KR and DNV-GL standards for marine cryogenic service.

Quality Assurance & Testing

Production process:
1. VD/VOD refining for ultra-low S/P control (S ≤0.002%, P ≤0.010%).
2. Thermomechanical rolling for uniform grain structure.
3. Ultrasonic testing (UT) and magnetic particle inspection (MPI).
Third-party certifications:
- Impact test reports: -196°C Charpy V-notch (ISO 148-1).
- Chemical analysis: independent lab verification (SGS/BV).

Why Partner With Us?

✅ Global Supply Capacity: 50,000+ tons annual production, 30-day lead time for bulk orders.
✅ Custom Solutions:

Low residual magnetism: <30 Gauss for welding-sensitive projects.
Pre-cut plates: CNC machining to reduce onsite fabrication time.
✅ End-to-end Support:
Logistics: ISO containers with humidity-controlled packaging.
Documentation: Mill test certificates (EN 10204 3.1/3.2).

Need cryogenic steel for your LNG or industrial project?
📥 Download Full Datasheet | 📞 Request a Quote | 💬 Live Chat with Engineers

Tool Steel

Bearing Steel

Stainless Steel

Sheet Metal for Cars

Mold Steel

Structural Steel

Bulletproof Steel Plate

Spring Steel

Abrasion Resistant Steel

PC Strand

Free-Cutting Steel

Heat-Resistant Steel