A516 Grade 60 plate: turn the design requirement into a purchase
Gangsteel supplies ASTM A516 Grade 60 carbon-manganese plate for welded pressure vessels in moderate and lower temperature service where notch toughness matters. An enquiry should describe the plate needed by the fabricator, not just repeat the grade name: thickness, dimensions, delivery condition and inspection scope all affect the material requirements.
Grade 60 is the inch-pound designation and Grade 415 is the SI designation in ASTM A516/A516M. State the required specification edition and unit system with your plate schedule. The standard’s inch-pound and SI values are independent, rather than exact conversions to be combined within one acceptance calculation.
The thin-plate manganese choice is specific to Grade 60
For Grade 60, manganese cannot be summarized by one range covering every thickness. Public specification references distinguish plates ½ in. [12.5 mm] and under from thicker plate, and permit a higher manganese alternative in that thinner band. This distinction is important when a project places additional restrictions on chemistry.
If the design or purchase specification requires a particular thin-plate range, identify it in the enquiry and order. A product-analysis result also needs the product-analysis limits—not the heat-analysis range. Do not carry the Grade 65 or Grade 70 manganese presentation into a Grade 60 purchase without this distinction.
Composition limits by thickness and analysis type
The tables give public-reference limits for Grade 60 [415], in mass percent. They are neither mill typical values nor a producer’s tighter guarantee. Carbon maxima are the same for heat and product analysis; the applicable maximum rises through the thickness bands. Heat analysis describes the steel heat, while product analysis is taken from the finished plate.
| Plate thickness | Heat analysis | Product analysis |
|---|---|---|
| ½ in. [12.5 mm] and under | 0.21 | 0.21 |
| Over ½ in. to 2 in. [12.5 to 50 mm], incl. | 0.23 | 0.23 |
| Over 2 in. to 4 in. [50 to 100 mm], incl. | 0.25 | 0.25 |
| Over 4 to 8 in. [100 to 200 mm], incl. | 0.27 | 0.27 |
| Over 8 in. [200 mm] | 0.27 | 0.27 |
| Thickness / option | Heat analysis | Product analysis |
|---|---|---|
| ½ in. [12.5 mm] and under — lower range | 0.60–0.90 | 0.55–0.98 |
| ½ in. [12.5 mm] and under — permitted higher alternative | 0.85–1.20 | 0.79–1.30 |
| Over ½ in. [12.5 mm] | 0.85–1.20 | 0.79–1.30 |
| Element | Heat analysis | Product analysis |
|---|---|---|
| Silicon | 0.15–0.40 | 0.13–0.45 |
| Phosphorus, maximum | 0.025 or 0.035; see source note | 0.025 or 0.035; see source note |
| Sulfur, maximum | 0.025 or 0.035; see source note | 0.025 or 0.035; see source note |
Classify plate using “and under” and “Over” in the chosen unit system, particularly at the ½ in. [12.5 mm] boundary. The two manganese rows for thinner plate are permitted alternatives, not a single combined interval. State any preference before the offer is agreed.
The public references also permit a carbon–manganese adjustment: for each reduction of 0.01 percentage point below the specified carbon maximum for that thickness, manganese may increase by 0.06 percentage point above its specified maximum, up to 1.50% on heat analysis and 1.60% on product analysis. Apply the rule with the ordered specification.
Source note for the phosphorus and sulfur limits
Phosphorus and sulfur each have two maxima in the public references, applying to both heat and product analysis:
- 0.035% is recorded in public tables identified with ASTM A516/A516M-06 and SA-516 described as identical with that edition.
- 0.025% appears in the January 2022 PipingMart compilation without a printed ASTM year, and in compilations citing A516/A516M-25. This is a public reference, not a confirmed official value of any named current ASTM or ASME edition. The sources do not establish which edition introduced the figure.
Acceptance must use the edition on the order. Neither a published compilation nor a mill’s tighter product chemistry changes that contractual basis.
Grade 60 strength values with the correct gauge lengths
ASTM’s official A516/A516M-25 public Scope supplies the tensile ranges below. SSAB’s Grade 60 required-property table supports the inch-pound minimum yield and elongations. These published references support procurement discussions; the ordered edition supplies the acceptance requirements.
| Property | Published value | Reference / test conditions |
|---|---|---|
| Tensile strength, Grade 60 | 60–80 ksi | Inch-pound; ASTM A516/A516M-25 public Scope. |
| Tensile strength, Grade 415 | 415–550 MPa | SI; ASTM A516/A516M-25 public Scope. |
| Minimum yield strength | 32 ksi | Inch-pound; SSAB Grade 60 published required properties. |
| Minimum elongation, 2 in. [50 mm] gauge | 25% | SSAB required properties; thickness adjustments per A20/A20M. |
| Minimum elongation, 8 in. [200 mm] gauge | 21% | Same reference basis and applicable thickness adjustments. |
Elongation percentages belong to their stated gauge lengths, with the applicable thickness adjustments; they are not assigned to two nominal plate-thickness groups. For SI yield, use the Grade 415 value in the ordered edition instead of treating a conversion of 32 ksi as the specification value.
Delivery condition and the inspection request
Public compilations and SSAB’s Grade 60 delivery description indicate normalized plate over 1.50 in. [40 mm] unless otherwise ordered, and normally as-rolled plate at or below that boundary unless ordered otherwise. In the thinner range requiring notch-toughness testing, the compilations specify normalizing unless the purchaser specifies otherwise. Use the rule in the ordered edition and unit system; the carbon step at 50 mm is a different boundary.
Write the required condition on each relevant schedule item. Where impact testing is required, specify temperature, orientation, acceptance criteria and the governing requirement. For ultrasonic examination, provide the method, standard edition, acceptance criteria and reporting needs. Neither the grade description nor normalizing alone establishes an agreed impact result.
Compare related grades without changing the specified material
| Material | Purchase distinction |
|---|---|
| ASME SA516 Grade 60 steel plate | Corresponding ASME family designation. Code orders require the specified SA designation, edition and supporting certification. |
| ASTM A516 Grade 65 steel plate | Another A516 strength grade: 65–85 ksi tensile and 35 ksi minimum yield, compared with Grade 60’s 60–80 ksi and 32 ksi. |
| ASTM A516 Grade 70 steel plate | A further strength level: 70–90 ksi tensile and 38 ksi minimum yield. Its carbon limits and thin-plate manganese rules are not Grade 60 requirements. |
| ASTM A515 Grade 60 | A different specification for intermediate- and higher-temperature service; the matching number is not evidence of identity. |
If a revised material schedule instead calls for ASME SA516 Grade 65 steel plate, treat it as a change in designation and strength grade. Material substitutions require the relevant design and project approval, not merely a different product link.
Questions before ordering ASTM Grade 60
Does Grade 415 mean a separately converted Grade 60 value?
Grade 415 is the SI designation listed alongside Grade 60 in ASTM A516/A516M. Use the requirements of the unit system specified by the order. Do not create a mixed set of limits by converting selected inch-pound values and then treating the results as the SI specification.
Can thin Grade 60 plate use the higher manganese range?
Yes, the public references permit the higher alternative for plate ½ in. [12.5 mm] and under as well as listing the lower range. Specify any project preference on the order. Assess the reported composition against its heat or product analysis basis and the requirements of the applicable edition.
Is carbon 0.21% the limit for every Grade 60 plate?
No. It is the maximum in the thinnest listed band; the other bands have different maxima. Select the row for the ordered thickness and unit system. The measured carbon for a heat may be lower than its permitted maximum, so distinguish the material result from the specification limit.
Can a higher A516 grade be substituted to avoid a purchasing delay?
Not without the project’s approval. The strength level, carbon limits and other requirements differ between grades. Retain the specified Grade 60 on the order unless the design and material requirements are formally revised. A higher grade number is not, by itself, permission to substitute the material.
What details make a Grade 60 quotation usable?
Include an itemized plate schedule, ASTM edition and unit system, required delivery condition and material documents. Add any manganese preference, tighter chemistry or inspection requirements, and give the requested destination and delivery date. This lets an offer address the intended purchase rather than a generic grade description.
Build your Grade 60 enquiry around the plate schedule
Send Gangsteel the material requirements and the dimensions to be quoted:
- ASTM designation, grade, edition and unit system.
- Thickness, width, length, quantities and tolerances for each line.
- Delivery condition and any thin-plate manganese requirement.
- Impact, ultrasonic, analysis, documentation and marking requirements.
- Destination and requested delivery date for assessment.
Attach the drawing or purchase specification wherever it defines additional acceptance conditions.
Availability, document scope and delivery terms are subject to the quotation for the specific order.