S890Q is a European high-strength structural steel (EN 10025-6) known for its yield strength of 890 MPa after quenching and tempering (Q), with equivalents including Chinese Q890, German TStE 890 V, and related EN grades like S890QL and S890QL1, used in heavy machinery, cranes, and bridges for extreme load applications, often specified with impact energy levels.
S890Q Equivalent Grades
🇪🇺 Europe
EN 10025-6 S890Q (1.8940) → Reference standard
Notes: Supplied in quenched & tempered (Q) condition, minimum yield strength 890 MPa.
🇨🇳 China (GB Standards)
| EN Grade | Closest GB Equivalent | Remarks |
|---|---|---|
| S890Q | Q890D / Q890E | Similar yield strength; toughness and chemistry must be verified |
| S890Q | Q960D (alternative) | Higher strength, not direct equivalent |
✅ Q890D/E is the most commonly accepted Chinese substitute in practice.
🇺🇸 USA (ASTM / AISI)
| EN Grade | Approximate ASTM Grade | Remarks |
|---|---|---|
| S890Q | ASTM A514 Grade Q / F | Closest in strength & Q&T condition |
| S890Q | ASTM A517 | Used in pressure-related structures, not direct structural equivalent |
⚠️ ASTM standards do not have a true S890Q equivalent; A514 is used by comparison only.
🇯🇵 Japan (JIS)
| EN Grade | JIS Equivalent | Remarks |
|---|---|---|
| S890Q | JIS G4404 SM570 (partial) | Lower strength |
| S890Q | JIS SHY685 / SHY685NS | Closest high-strength structural option |
⚠️ Japanese standards generally fall below 890 MPa yield.
🇰🇷 Korea
| EN Grade | KS Equivalent | Remarks |
|---|---|---|
| S890Q | KS D 5994 SHP685 / SHP780 | Strength lower than S890Q |
🇷🇺 Russia / CIS
| EN Grade | GOST Equivalent | Remarks |
|---|---|---|
| S890Q | 09Г2С-890 / S890-GOST (project-specific) | Requires project approval |
Quick Strength Comparison
| Grade | Standard | Min Yield Strength |
|---|---|---|
| S690Q | EN 10025-6 | 690 MPa |
| S890Q | EN 10025-6 | 890 MPa |
| S960Q | EN 10025-6 | 960 MPa |
| ASTM A514 | ASTM | ~690–895 MPa |
| Q890D | GB/T | ~890 MPa |
Key Notes for Procurement & Technical Alignment
When substituting S890Q with equivalent grades, pay attention to these critical factors (essential for avoiding supply chain risks):
a. Core Performance Metrics to Verify
Yield Strength (YS): Ensure the equivalent grade has a minimum YS of 890 MPa (e.g., ASTM A514 Gr. E and GB Q890GJ meet this; ASTM A709 Gr. 100 does not-avoid for high-strength requirements).
Heat Treatment: S890Q is delivered in quenched and tempered (Q&T) condition. Equivalent grades must also be Q&T (e.g., JIS HSL890, GOST 09Г2СБФТ) – avoid normalized (N) or hot-rolled (HR) grades.
Impact Toughness: S890Q requires a minimum impact energy of 40 J at -20°C (EN 10025-6). Check equivalent grades' impact test temperatures (e.g., ASTM A514 Gr. E uses -10°C or -20°C; confirm with suppliers).
Weldability: S890Q is weldable with proper preheating. Equivalent grades (e.g., GB Q890GJ, ASTM A514 Gr. E) have similar weldability, but confirm chemical composition (e.g., carbon equivalent CEV) for high-strength applications.
b. Application-Specific Substitution
Heavy Machinery/Offshore: Prioritize direct equivalents (ASTM A514 Gr. E, ISO S890Q) for critical load-bearing components.
Construction (Bridges/Buildings): GB Q890GJ or ASTM A709 Gr. 100 (if strength allows) are preferred for regional compliance.
Automotive: JIS HSL890 is suitable for Japanese markets, while ASTM A514 Gr. E works for North American clients.
If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.
Q1: Is S890Q equivalent to ASTM A36?
No. ASTM A36 is a low-carbon structural steel (min YS: 250 MPa) – far lower strength than S890Q (890 MPa). They are not interchangeable.
Q2: Can I substitute S890Q with Q690 steel?
Q690 (e.g., EN 10025-6 S690Q) has a min YS of 690 MPa – 200 MPa lower than S890Q. Only substitute if the application's strength requirements are revised.
Q3: What is the difference between S890Q and S890QL?
"S890QL" is the low-temperature toughness variant of S890Q (EN 10025-6). It requires impact energy of 40 J at -40°C (vs. -20°C for S890Q). They are not direct equivalents – QL grades are for cold environments (e.g., Arctic projects).
