Carbon Steel SA 516 Plate — The Pressure Vessel and Boiler Standard
If you fabricate pressure vessels, boilers, or storage tanks in India, you already know SA 516. This ASTM/ASME specification has been the undisputed standard for moderate and lower-temperature pressure vessel plates for over 50 years. As a leading carbon steel SA 516 plate stockist in India and steel trading company in Gujarat, Creative Metal Industries maintains ready stock of SA 516 Grade 60 and Grade 70 plates from 6mm to 200mm thickness — with IBR Form III-C, NACE MR-01-75 compliance, and HIC test reports available for every heat.
Why SA 516 is the Go-To Plate for Pressure Vessels
Three factors make SA 516 the default choice for ASME Section VIII coded vessels:
- Excellent weldability: Low carbon equivalent (CE ≤ 0.45) means no preheat required for plates up to 40mm. Multi-pass welds are routine without PWHT concerns
- Good notch toughness: When normalised, SA 516 provides reliable Charpy impact values at temperatures down to -40°C — critical for cryogenic storage and cold-climate installations
- Optimal strength-to-cost ratio: Grade 70 (485-620 MPa tensile, 260 MPa yield) offers sufficient strength for most vessel designs without the premium of alloy or quenched-tempered grades
- Universal availability: Every major Indian mill (SAIL, AMNS, TATA, JSW) produces it. Multiple sources = competitive pricing and short lead times
- Code acceptance: Explicitly listed in ASME BPVC Section II Part A as SA-516. No supplementary requirements needed for standard applications
Chemical Composition — SA 516 Gr.70
| Element | Thickness ≤ 12.5mm | 12.5–50mm | 50–200mm | Role |
|---|---|---|---|---|
| Carbon (C) | 0.27% max | 0.28% max | 0.31% max | Strength — but kept moderate for weldability |
| Manganese (Mn) | 0.85–1.20% | 0.85–1.20% | 0.85–1.20% | Strength + toughness; deoxidiser |
| Silicon (Si) | 0.15–0.40% | 0.15–0.40% | 0.15–0.40% | Deoxidiser; minor strength contribution |
| Phosphorus (P) | 0.035% max | 0.035% max | 0.035% max | Impurity — promotes embrittlement |
| Sulphur (S) | 0.035% max | 0.035% max | 0.035% max | Impurity — kept low for toughness + HIC resistance |
Note: For HIC-resistant SA 516, sulphur is further restricted to ≤ 0.002% with calcium treatment for inclusion shape control. This is the NACE HIC variant supplied by us as a specialist NACE HIC steel plate supplier in India.
Mechanical Properties — SA 516 Grades Compared
| Property | Gr.60 | Gr.65 | Gr.70 |
|---|---|---|---|
| Tensile Strength (MPa) | 415–550 | 450–585 | 485–620 |
| Yield Strength min (MPa) | 220 | 240 | 260 |
| Elongation min (%) | 21 | 19 | 17 |
| Impact Test (Charpy V) | Available (normalised) | Available (normalised) | Available (normalised) |
| Condition | AR or Normalised | AR or Normalised | AR or Normalised |
| Typical Use | Low-pressure tanks | Moderate-pressure | High-pressure vessels |
Key Applications
Pressure Vessels
ASME Section VIII Division 1 & 2 coded vessels for petrochemical refineries, fertilizer plants, and chemical processing. The most specified plate material.
Boilers & Heat Exchangers
IBR-certified boiler drums, headers, tube sheets. SA 516 Gr.70 with IBR Form III-C is mandatory for Indian power plant boiler fabrication.
Storage Tanks
API 650/620 atmospheric and low-pressure tanks for crude oil, LPG, chemicals, and water. SA 516 Gr.60 for shell plates in large-diameter tanks.
Reactors & Columns
Process columns, separators, scrubbers in refinery and petrochemical service. Often specified with NACE/HIC for sour gas environments.
Grades Explained — When to Use Gr.60, 65, or 70
- SA 516 Grade 60: For low/moderate-pressure vessels, large storage tanks (API 650), and applications where maximum weldability is prioritised over strength. Rarely specified in new designs — Grade 70 has largely replaced it.
- SA 516 Grade 65: Intermediate grade — seldom used in India. Most designers jump directly to Gr.70 for the marginal strength increase with no weldability penalty.
- SA 516 Grade 70: The workhorse — accounts for ~80% of all SA 516 consumption. Suitable for ASME Section VIII vessels up to 650°F (343°C) design temperature. When normalised, provides excellent impact toughness for cold service down to -40°C.
Why Source SA 516 from Creative Metal Industries?
- Ready stock: SA 516 Gr.60/70 from 6mm to 150mm at our Vadodara warehouse — 2-3 day delivery for standard sizes
- IBR Form III-C: Mandatory for Indian boiler fabrication — we stock IBR-certified plates from SAIL and AMNS approved mills
- NACE/HIC certified: For sour service — S ≤ 0.002%, Ca-treated, HIC tested per TM-0284 (CLR ≤ 15%, CTR ≤ 5%, CSR ≤ 2%)
- UT tested: 100% ultrasonic tested per SA 435 Level B or SA 578 Level B — zero lamination guarantee
- Cut-to-size: Oxy-fuel and plasma cutting at our facility — deliver plate to your exact dimensions
- Mill sources: SAIL (Bhilai, Bokaro), AMNS (ArcelorMittal Nippon Steel), TATA Steel, JSW — all with original MTC (EN 10204 3.1/3.2)
For detailed pricing, stock availability, and specifications, visit our dedicated product page: SA 516 Plate Stockist India →
Frequently Asked Questions — SA 516
What is SA 516 Grade 70 used for?
Pressure vessels (ASME Sec VIII), boilers (IBR), heat exchangers, API 650/620 storage tanks, reactors, and columns in petrochemical, refinery, fertilizer, and power industries. The most widely specified pressure vessel plate globally.
Difference between SA 516 Grade 60 and Grade 70?
Tensile: Gr.60 = 415-550 MPa, Gr.70 = 485-620 MPa. Yield: Gr.60 = 220 MPa, Gr.70 = 260 MPa. Both weldable. Gr.70 is preferred for higher-pressure applications. Gr.60 is used for large-diameter low-pressure tanks where thinner walls suffice.
Can SA 516 be supplied with NACE and HIC testing?
Yes — we stock NACE MR-01-75 compliant + HIC tested (TM-0284) SA 516 Gr.60/70 plates. Acceptance: CLR ≤ 15%, CTR ≤ 5%, CSR ≤ 2%. Sulphur ≤ 0.002%, calcium treated. Mandatory for sour gas (H₂S) service in oil & gas. Also available: SSC test per TM-0177.
Need SA 516 Plates?
Ready stock 6mm-150mm. IBR + NACE + HIC. SAIL, AMNS, TATA mills. Same-day quotes.