P355NH vs S960QL: 53% composition overlap. Moderate differences, generally not direct substitutes.
P355NH vs S960QL
Side-by-side chemical composition and mechanical property comparison.
Overview
P355NH
1.0565
Weldable fine-grained non-alloy steel for pressure vessels with minimum yield strength 355 MPa. NH designation indicates normalized condition with specified elevated temperature properties and impact testing at -20°C. Very widely used pressure vessel grade for boilers, storage tanks, heat exchangers, and pipes transporting hot liquids and pressurized gases. Good weldability and resistance to brittle cracking.
S960QL
1.8933
Ultra-high-strength quenched and tempered fine-grained structural steel with minimum yield strength 960 MPa. QL designation indicates impact testing at -40°C. Used for mobile cranes, heavy lift equipment, offshore wind turbine towers, mining machinery, and weight-critical structural applications. Weldable with appropriate precautions (preheating, low hydrogen). Dramatically reduces component weight compared to conventional structural steels.
| P355NH | S960QL | |
|---|---|---|
| Material Number | 1.0565 | 1.8933 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10028-3 | EN 10025-6 |
Chemical composition (wt%)
| Element | P355NH | S960QL | Overlap |
|---|---|---|---|
| C | ≤ 0.18% | ≤ 0.2% | OK |
| Si | ≤ 0.5% | ≤ 0.8% | OK |
| Mn | 1.1–1.7% | ≤ 1.7% | OK |
| P | ≤ 0.025% | ≤ 0.02% | OK |
Mechanical properties
| Property | P355NH | S960QL | Unit |
|---|---|---|---|
| tensile_strength | 490–630 | 980–1150 | MPa |
| yield_strength | ≥ 355 | ≥ 960 | MPa |
| elongation | ≥ 22 | ≥ 10 | % |
Compatibility Assessment
P355NH and S960QL have moderate differences (53% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is P355NH the same as S960QL?
P355NH and S960QL have a 53% composition overlap. They are generally not directly interchangeable.
Can I replace P355NH with S960QL?
Generally not recommended. The compositions differ significantly (53% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between P355NH and S960QL?
The main differences are in the following elements: overall alloying content. P355NH is a Carbon Steel grade, while S960QL is a Carbon Steel grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.