Home > Products > SA 516 Gr 70 NACE > SA516 Gr 70 NACE Coils
In sour gas service, the wrong coil supply can destroy both timelines and credibility.
If coils are not NACE-compliant:
At Navgraha Steels INC, Mumbai – Maharashtra – India, we supply SA516 Gr 70 NACE Certified Coils that:
With Navgraha, you don’t just buy coils — you invest in audit-proof supply that protects your refinery project.
SA516 Gr 70 NACE Coils are boiler quality steel coils tested for resistance against sulfide stress cracking (SSC) as per NACE MR0175/MR0103.
They are widely used in
These coils are non-negotiable for sour service environments
Procurement challenges buyers face:
Navgraha Steels INC solves this:
That’s why EPCs and refineries worldwide trust Navgraha Steels INC
| Property | Typical Value | Why It Matters |
|---|---|---|
| Tensile Strength | 485–620 MPa | Handles refinery & boiler pressures |
| Yield Strength | Min 260 MPa | Ensures reliability under high loads |
| Elongation | 17–21% | Prevents cracks during forming & bending |
| Impact Resistance | Up to -20°C | Resists brittle failure at low temps |
| Hardness (BHN) | ≤ 250 | Maintains weldability & machinability |
These properties guarantee safe performance under refinery & offshore operating conditions.
| Element | % Range | Why Controlled? |
|---|---|---|
| Carbon (C) | ≤ 0.21 | Ensures weldability, avoids brittleness |
| Manganese (Mn) | 0.55–1.20 | Provides strength with toughness |
| Phosphorus (P) | ≤ 0.020 | Lower = less chance of sulfide cracking |
| Sulfur (S) | ≤ 0.010 | Lower = prevents H₂S stress corrosion |
| Silicon (Si) | 0.13–0.45 | Enhances structural stability |
NACE compliance demands extra-low P & S → protecting against hydrogen-induced cracking in sour service.
Our SA516 Gr 70 NACE Certified Coils are supplied in full compliance with global codes:
With NACE MR0175/MR0103 certification, these coils are globally approved for sour service projects — from Middle East refineries to offshore platforms.
At Navgraha Steels INC, Mumbai, we maintain ready-to-ship NACE-certified coils in:
Buyer Tip: For refinery shutdowns, always request cut-to-length coils → saves time and reduces fabrication bottlenecks
Different service conditions demand specific treatments:
Most EPC buyers prefer Normalized NACE coils to guarantee smooth third-party inspection approval.
Procurement risk: “Will these coils crack during rolling, forming, or welding?”
With Navgraha Steels INC’s supply, you get:
This means zero surprises during fabrication, fewer repairs, and smoother project execution.
We are more than a stockist — we are your compliance partner for refinery and offshore projects.
With Navgraha, buyers receive audit-ready coils, delivered on time, with full documentation.
We supply coils in the most demanded compliance variants:
Whatever your compliance requirement, Navgraha Steels INC ensures you get coils that pass every audit.
Our NACE-certified coils are shipped globally from Mumbai’s Nhava Sheva Port.
Packaging Promise: Seaworthy pallets, coil wrapping, edge protection → ensures coils arrive inspection-ready.
Before ordering, procurement teams should verify:
Navgraha Tip: Always request NACE + HIC tested coils for refinery service → prevents SCC & HIC failures
Every order from Navgraha Steels INC comes with:
This means your coils are audit-proof and globally accepted.
It ensures resistance to sulfide stress cracking (SSC) in hydrogen sulfide (H₂S) service, making them mandatory for refineries.
Yes, we supply IBR-certified coils for Indian boiler applications.
Yes, we stock NACE + HIC tested coils for refinery and petrochemical projects.
Thicknesses 6–50 mm, widths 1,250–3,000 mm, coil weights up to 25 MT.
NACE MR0175/MR0103, HIC, IBR, 3.1/3.2 MTCs, and third-party approvals.
It varies by thickness, certification, and order size. Contact us for updated prices.
Because we deliver audit-ready, globally certified coils with export credibility and timely supply.
Don’t risk project delays with uncertified supply.
With Navgraha Steels INC, Mumbai, you get:
Call to Action: Request your datasheet and price today. Get SA516 Gr 70 NACE Coils delivered on time, every time.
