ASME SA517 Grade B Steel Boiler Plate
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Gnee Steel (Tianjin) Co., Ltd. is one of the most professional asme sa517 grade b steel boiler plate manufacturers and suppliers in China. Welcome to wholesale customized asme sa517 grade b steel boiler plate at competitive price from our factory. Good service and quality products are available.
SA517 Grade B is a quenched and tempered alloy steel plate designed for extreme conditions, offering:
Ultra-High Strength: Yield strength ≥ 690 MPa (100 ksi), tensile strength 795–930 MPa.
Thermal Stability: Retains structural integrity up to 400°C (752°F) under sustained loads.
Optimized Weldability: Pre-qualified welding procedures minimize hydrogen-induced cracking risks.
ASTM A517 Grb High Strength Alloy Steel Plate Key Differentiator: Unlike generic pressure vessel steels, SA517 Grade B is specifically normalized for thick-section components (up to 150mm), making it indispensable for heavy-duty boilers and reactors.
2. Hyper-Specific Applications: Where SA517 Grade B Excels
A. Urea Synthesis Reactors in Fertilizer Plants
Challenge: Urea production involves corrosive carbamate melts at 180–210°C and 150–250 bar pressure, causing severe stress corrosion.
Why SA517 Grade B?
Stress Corrosion Cracking (SCC) Resistance: Nickel-chromium-molybdenum alloying combats carbamate aggression.
High-Pressure Endurance: Maintains ductility under cyclic loads, preventing fatigue failure.
Case Study: A Southeast Asian fertilizer plant reduced unplanned downtime by 40% after switching from SA387 Gr.22 to SA517 Grade B for reactor liners.
B. Delayed Coking Drum Shells in Oil Refineries
Challenge: Coking drums endure thermal cycling (ambient to 480°C) and mechanical stress from decoking operations.
Why SA517 Grade B?
Thermal Fatigue Resistance: Fine-grained microstructure withstands repeated heating/cooling cycles.
Creep Strength: Minimal deformation under 400°C+ temperatures during coke formation.
Competitor Comparison: Outperforms SA204 Gr.B in creep rupture strength by 25% at 400°C.
C. Coal Gasification Syngas Coolers
Challenge: Syngas coolers face erosion-corrosion from abrasive ash particles and acidic gases (H2S, CO2).
Why SA517 Grade B?
Surface Hardness: 220–250 HB minimizes ash particle erosion.
Sour Service Compliance: Meets NACE MR0175 for H2S environments (up to 0.3 psi partial pressure).
D. Geothermal Steam Separators
Challenge: Geothermal systems require materials resistant to chloride-induced pitting and 300°C wet steam.
Why SA517 Grade B?
Enhanced Pitting Resistance Equivalent (PRE): PRE ≥ 35 due to Cr + 3.3Mo content.
Cost Efficiency: 30% cheaper than duplex stainless steel (SA240 S32205) for equivalent pressure ratings.
3. SA517 Grade B vs. Alternatives: Why It Wins
| Application | Traditional Choice | SA517 Grade B Advantage |
|---|---|---|
| Urea Reactors | SA387 Gr.22 Cl.2 (2.25Cr-1Mo) | Higher SCC resistance, no need for cladding |
| Coking Drums | SA204 Gr.B (C-Mo steel) | Superior thermal fatigue life (+30%) |
| Syngas Coolers | SA515 Gr.70 | 2x erosion-corrosion resistance |
| Geothermal Systems | SA240 316L | Higher strength-to-weight ratio, lower cost |
4. Technical Validation & Certifications
SA517 Grade B complies with:
ASME Boiler and Pressure Vessel Code Section VIII: Certified for Division 1 and 2 designs.
ISO 9328-4: European compliance for quenched and tempered steels.
ABS & DNV-GL Approval: Accepted for offshore energy systems.
Testing Protocols:
Charpy V-Notch Impact: ≥ 40J at -20°C (ASTM A370).
Hardenability Verification: Jominy end-quench tests ensure through-thickness consistency.
5. Partner with a Trusted SA517 Grade B Supplier
As a leading supplier, we provide:
Custom Cutting: Plasma/laser cutting for complex geometries (e.g., coking drum half-shells).
Third-Party Inspection: SGS/BV-certified MTRs with traceable heat numbers.
Just-in-Time Delivery: Strategic stockpiles in the EU, Middle East, and North America.
Technical Support: Free PWHT guidelines and welding procedure specifications (WPS).
Upgrade Your Critical Systems with Precision-Grade Steel
From urea reactors battling corrosive melts to geothermal separators resisting chloride attacks, SA517 Grade B is engineered for extremes. Don't settle for generic materials-choose a plate that aligns with your operational DNA.
📩 Contact us today for a quote tailored to your project's pressure, temperature, and corrosion challenges.
Email: info@gneesteels.com
Keywords: ASME SA517 Grade B Supplier, High-Temperature Boiler Plate, Urea Reactor Steel, Delayed Coking Drum Material, Geothermal Equipment Steel
Main uses of SA517 Grade B Boiler Plate
It has high strength, good plasticity, toughness and welding performance, and is used for mechanical module supports in nuclear power plants.
ASME SA517 Grade B Pressure Vessel Quality Steel Heat Treatment:
All steel plates shall be heat treated by the material manufacturer by heating the plate to a temperature not less than 1650°F (900°C), quenching in water or oil, and subsequently quenching it in water or oil at a temperature not less than 1150°F (620°C). Temper below and keep warm for at least h.
ASME SA517 Grade B Boiler Quality Steel Chemical Composition and Mechanical Property:
|
Grade |
Chemical Composition(%) |
||||
|
C |
Si |
Mn |
P |
S |
|
|
SA517 Grade B (SA517GR B) |
0.13-0.23 |
0.13-0.37 |
0.64-1.10 |
0.035 |
0.035 |
|
Grade |
Mechanical Property |
|
|||
|
Tensile Strength(MPa) |
Yield Strength(MPa) |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
|
|
SA517 Grade B (SA517GR B) |
725-930 |
620 |
14 |
-20,40,-60 |
|
Company Profile
Since 2008, Gnee Group has provided quality steel products to more than 600 customers in more than 70 countries around the world. We have established long-term cooperative relationships with dozens of factories in China to ensure that our products are manufactured using high-quality materials and in sync with various international standards, with an annual export volume of more than 80,000 tons. Gnee Group is committed to becoming the world's most internationally competitive supply chain group, meeting the different needs of different customers, and truly realizing: one-stop service, making choice easier.
ASME SA517 Mild Steel Pressure Vessel Grade B Product Picture
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