ASME SA832 Grade 23V Steel Plate | SA832 Gr.23V Cr-Mo-V Vessel Plate
What is ASME SA832 Grade 23V Steel ?
ASME SA832 Grade 23V, also written ASME SA832 GR.23V, is chromium-molybdenum-vanadium alloy plate under ASME SA-832/SA-832M. The specification covers three grades only: 21V, 22V and 23V. Grade 23V is the 3Cr-1Mo-V line with the high normalizing floor. Chromium heat is 2.75–3.25%. Molybdenum heat is 0.90–1.10%. Vanadium heat is 0.20–0.30%. The plates are required to be normalized and tempered. Minimum normalizing temperature for Grade 23V is 1010 °C. Minimum tempering temperature is 675 °C. Quenched-and-tempered Cr-Mo-V of this family belongs to SA-542 / A542, not this page. As Direct Mill Supply by SHH STEEL, the plate is produced to ASME SA-832/SA-832M.
Buyers write ASME SA832 Grade 23V, ASME SA832 GR.23V, SA832 Grade 23V, SA832 Gr.23V, SA832GR23V, SA-832 Grade 23V and SA 832 Gr 23V. ASTM A832 Grade 23V is the companion product spec. There is no Class and no Type. A purchase order that says “SA832 Grade 23” without the V is incomplete, and a purchase order that copies Grade 22V normalizing at 900 °C onto 23V is wrong.
This page is not SA387 Grade 21. SA387 Grade 21 is 3Cr-1Mo without the vanadium band that defines 23V. It is not SA517 Gr.E. It is not SA841 TMCP. It is not ASME SA516 carbon plate. Thickness is limited only by the ability of the composition to meet the tensile table after normalize and temper.
Grade 21V shares the 2.75–3.25% chromium band. Grade 22V uses 2.00–2.50% chromium and a 900 °C normalizing floor. Same tensile table does not make the three grades interchangeable. Dual marking SA832 / A832 Grade 23V is available. Certificates can be EN 10204 3.1 or 3.2. Company scope: China steel Mill Agent-SHH STEEL.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | ASME SA832 Grade 23V / ASME SA832 GR.23V | Confirmed |
| Product Specification | ASME SA-832/SA-832M | Applied |
| Companion Spec | ASTM A832 Grade 23V | Dual cert available |
| General Requirements | ASME SA-20 / ASTM A20 | Applied |
| Process | Normalized and tempered | Confirmed |
| Normalize floor | 1010 °C min for Grade 23V | Applied |
| Temper floor | 675 °C min | Applied |
| QT sister spec | SA-542 / A542 | Not this page |
| Alloy idea | 3Cr-1Mo-V | Confirmed |
| Certification | EN 10204 3.1 or 3.2 / third-party | As ordered |
This plate sits in the pressure vessel steel plates family and with ASME SA387 as a related Cr-Mo family, not as a substitute. It does not sit with carbon steel plates or ASTM A36/A36M.
SA-20 still governs marking, testing location, retests and repair rules.
Chemical Composition
ASME SA832 Grade 23V / ASME SA832 GR.23V has its own heat and product columns. Grade 22V uses a lower chromium band.
Heat Analysis and Product Analysis — ASME SA832 Grade 23V
| Element | Heat Analysis (%) | Product Analysis (%) |
|---|---|---|
| Carbon (C) | 0.10 – 0.15 | 0.08 – 0.18 |
| Manganese (Mn) | 0.30 – 0.60 | 0.25 – 0.66 |
| Phosphorus (P), max | 0.025 | 0.025 |
| Sulfur (S), max | Per Table 2 of the named edition | Per Table 2 of the named edition |
| Silicon (Si), max | 0.10 | 0.13 |
| Chromium (Cr) | 2.75 – 3.25 | 2.63 – 3.37 |
| Molybdenum (Mo) | 0.90 – 1.10 | 0.85 – 1.15 |
| Vanadium (V) | 0.20 – 0.30 | 0.18 – 0.33 |
| Titanium, boron, copper, nickel, niobium, calcium | As Table 2 of the named edition | As Table 2 of the named edition |
Vanadium is not optional decoration. If V is missing, the plate is closer to SA387 Grade 21 than to SA832 Gr.23V. Chromium at 2.00–2.50% is Grade 22V, not Grade 23V. Grade 21V shares this chromium band; the Grade 23V difference that buyers miss first is the 1010 °C normalizing floor.
SHH STEEL reports heat analysis on every certificate, including Cr, Mo and V, and product analysis when SA-20 requires it.
Mechanical Properties
All three SA832 grades share one tensile table. The Grade letter changes chemistry and heat-treatment floors, not the published tensile numbers.
Tensile Requirements — ASME SA832 Grade 23V
| Property | Requirement |
|---|---|
| Yield strength, min | 415 MPa (60 ksi) |
| Tensile strength | 585 – 760 MPa (85 – 110 ksi) |
| Elongation in 50 mm, min | 18% |
| Reduction of area, min | 45% |
| Density | 7.85 g/cm³ |
| Hardness | Not a default substitute for tensile |
Density is 7.85 g/cm³. Notch toughness is commonly added for reactor work. Write the temperature, energy, location and orientation. Simulated PWHT is common because these plates often go into vessels that will see a long shop cycle.
Do not treat 415 MPa yield as permission to substitute SA516 Gr.70, SA533 Type B Class 1 or high strength low alloy plates.
Material Comparison
| Grade | Route | Alloy / HT idea | Swap? |
|---|---|---|---|
| SA832 21V | N+T Cr-Mo-V | 3Cr-1Mo-V | No |
| SA832 22V | N+T Cr-Mo-V | 2.25Cr-1Mo-V, N ≥ 900 °C | No |
| SA832 Gr.23V | N+T Cr-Mo-V | 3Cr-1Mo-V, N ≥ 1010 °C | This page |
| SA387 Gr.21 Cl.2 | Cr-Mo | 3Cr-1Mo, no 23V vanadium band | No |
| SA387 Gr.22 Cl.2 | Cr-Mo | 2.25Cr-1Mo | No |
| SA542 Cr-Mo-V | QT | Same alloy family, different process | No |
| SA537 Cl.2 | Heat-treated C-Mn-Si | No Cr-Mo-V | No |
SA299 Gr.B, SA225 Gr.D, SA455 and SA285 Gr.C are also vessel plates. None of them is ASME SA832 GR.23V.
Cr-Mo-V Vessel Service
ASME SA832 Grade 23V / ASME SA832 GR.23V is selected when the vessel wants normalized-and-tempered 3Cr-1Mo-V with the Grade 23V normalizing floor. Typical equipment is high-temperature welded pressure vessels written to SA-832 Grade 23V. Allowable stress comes from ASME Section II Part D after the Code lists this Grade.
It is not nickel low-temp plate like SA203 Gr.E. It is not layered QT carbon like SA724. Stainless inquiries belong on ASME SA240/SA240M, ASTM A240/A240M or stainless steel sheets and plates.
Do not form this plate as if it were as-rolled carbon. Normalize-and-temper properties are the product. A later PWHT cycle has to be planned and, when required, simulated on coupons.
Weldability
SA832 Gr.23V is killed, fine-grain Cr-Mo-V. Welding is Code welding.
Qualify procedures to ASME Section IX. Use consumables written for 3Cr-1Mo-V, not a plain carbon procedure and not an unreviewed SA387 Grade 21 procedure. Vanadium, the 1010 °C normalize and the N+T condition belong in the WPS review. Hydrogen control, preheat, interpass and PWHT follow the qualified procedure and the vessel specification.
Do not copy a SA387 Gr.12 Cl.2 procedure onto 23V without review. The fabricator owns the WPS.
Heat Treatment
All plates shall be normalized and tempered, except as the specification allows otherwise. For Grade 23V the minimum normalizing temperature is 1010 °C (1850 °F). The minimum tempering temperature is 675 °C (1250 °F). Grade 22V uses 900 °C. Do not apply the 22V floor to Grade 23V and call it close. Do not quench-and-temper this plate and still stamp SA832.
If the vessel will see a long PWHT, test coupons shall follow a simulated cycle. This is not the TMCP route and not the SA542 QT route. SHH STEEL prints N+T, Grade 23V, normalizing temperature and tempering temperature on the certificate when the mill record carries them.
Delivery Condition
Usual delivery is normalized-and-tempered ASME SA832 Grade 23V / ASME SA832 GR.23V plate.
The certificate lists ASME SA832 Grade 23V and, when dual certified, ASTM A832 Grade 23V; heat number; heat analysis including Cr, Mo and V; product analysis when ordered; tensile results; N+T statement with the 1010 °C floor; impact and simulated PWHT when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.
Dimensions
Usual supply range from SHH STEEL for SA832 Gr.23V Cr-Mo-V vessel plate:
- Thickness: commonly 8 mm – 150 mm, limited by the ability of the heat to meet 415 MPa yield after N+T
- Width: 1500 mm – 4000 mm
- Length: 3000 mm – 12000 mm
- Cut-to-length shells, heads and nest sizes inside those limits
Structural sizes belong on EN 10025-2 or JIS G3106. Weathering plate belongs on EN 10025-5 or Corten A/B. Fine-grain structural belongs on EN 10025-3 or EN 10025-4. QT structural belongs on EN 10025-6.
Tolerances
Dimensional limits follow ASME SA-20. Thickness, width, length, flatness and camber are vessel-plate tolerances. UT to A435 / A577 / A578 is commonly added on reactor plate.
Supplementary Requirements
Most export ASME SA832 Grade 23V / ASME SA832 GR.23V orders add extras. SHH STEEL does not assume them.
Charpy details. Temperature, energy, location and orientation.
Simulated PWHT. Same-heat coupons follow the vessel cycle.
NDE. UT to A435 / A577 / A578.
Hydrogen-service extras. When the vessel specification names them.
Third-party. EN 10204 3.2.
Equivalent Material Grades
| Designation | Standard | Notes |
|---|---|---|
| ASME SA832 Grade 23V / ASME SA832 GR.23V | ASME SA-832/SA-832M | Code name on this page |
| ASTM A832 Grade 23V | ASTM A832/A832M | Companion spec |
| SA832 21V / 22V | SA-832 | Other Cr-Mo-V grades |
| SA387 Grade 21 | SA-387 | 3Cr-1Mo, not 23V |
| SA542 Grade related | SA-542 | QT sister family |
| EN 10028-2 3Cr-1Mo-V related | EN | Project comparison |
| JIS / GB 3Cr-1Mo-V vessel related | JIS / GB | Confirm N+T and 1010 °C floor |
| ASME SA387 | SA-387 | Related Cr-Mo family |
DIN 17100, ASTM A516, ASME SA515 and ASTM A285 are not SA832 Gr.23V.
Applications
| Industry | Typical components |
|---|---|
| High-temperature vessels | ASME SA832 Grade 23V shells and ASME SA832 GR.23V heads |
| Cr-Mo-V reactors | SA832 Gr.23V N+T courses |
| Dual-certified export | SA832 / A832 Grade 23V plate |
| Fabrication | SA832 Gr.23V cut to nest sizes |
Ship plate inquiries belong on shipbuilding steel plates or BV Rules. Weathering inquiries belong on weathering steel plates. Stainless inquiries belong on stainless steel products, JIS G4305 or AISI stainless.
Other vessel comparisons: SA203 Gr.B, SA302 Gr.C, A516 Gr.70, SA533 Type C Class 2, SA517 Gr.P.
Why Choose SHH STEEL
SHH STEEL works as a China Mill Direct Exporter for plates to ASME SA-832/SA-832M. On ASME SA832 Grade 23V / ASME SA832 GR.23V that means mill pricing, dual SA832/A832 marking, Grade 23V chemistry with Cr-Mo-V reported, recorded normalize at not less than 1010 °C and temper at not less than 675 °C, tensile results at 415 MPa yield and 585–760 MPa tensile, 3.1 as standard and 3.2 when specified.
We keep the grade on the order. 23V is not 21V and is not 22V. SA832 is not SA387 Grade 21. SA832 is not SA516 Gr.55. SA832 Gr.23V is not SA533 Type C Class 1. If the drawing names QT Cr-Mo-V, we point the inquiry to SA542. If the shop plans a 900 °C normalize as if this were 22V, we will say Grade 23V is 1010 °C.
Company scope: China steel Mill Agent-SHH STEEL.
FAQ
- What names are used for ASME SA832 Grade 23V / ASME SA832 GR.23V?Buyers write ASME SA832 Grade 23V, ASME SA832 GR.23V, SA832 Grade 23V, SA832 Gr.23V, SA832GR23V, SA-832 Grade 23V and SA 832 Gr 23V. SHH STEEL prints the wording on the purchase order.
- Is ASME SA832 Grade 23V the same as ASTM A832 Grade 23V?Chemistry and tensile limits match. ASME SA-832 is the Code version. ASTM A832 is the product spec. As China mill-Direct Supply, SHH STEEL dual-certifies both names when the vessel must be stamped.
- What is the yield strength of SA832 Gr.23V?415 MPa minimum. Tensile is 585–760 MPa. Elongation is 18% in 50 mm. Reduction of area is 45% minimum.
- How is ASME SA832 GR.23V different from SA387 Grade 21?Both are about 3Cr-1Mo. SA832 23V adds the vanadium band, the 1010 °C normalize floor and is written as normalized-and-tempered Cr-Mo-V. Do not stamp one as the other.
- How is ASME SA832 Grade 23V different from 21V and 22V?: Same tensile table. Grade 23V and Grade 21V chromium is 2.75–3.25%. Grade 22V chromium is 2.00–2.50%. Grade 23V normalizing floor is 1010 °C. Grade 22V is 900 °C.
- Is SA832 Gr.23V quenched and tempered?No. SA832 is normalized and tempered. QT of this alloy family is SA542 / A542.
Conclusion
ASME SA832 Grade 23V Steel Plate, also searched as ASME SA832 GR.23V, is normalized-and-tempered 3Cr-1Mo-V plate under ASME SA-832/SA-832M, with a 1010 °C normalizing floor. Whether the inquiry says ASME SA832 Grade 23V, ASME SA832 GR.23V, SA832 Gr.23V or SA832GR23V, SHH STEEL supplies plate with Grade 23V chemistry, recorded N+T delivery, 415 MPa yield, and EN 10204 3.1 or 3.2 certification.
As a China mill Distributor, SHH STEEL provides ASME SA832 Grade 23V / ASME SA832 GR.23V Cr-Mo-V Vessel Plate for ASME Section VIII work that actually names this Grade.
Contact SHH STEEL for mill rolling, dual SA832/A832 marking, simulated PWHT testing, 3.2 inspection or a quotation.
ASME SA832 Grade 23V Steel Plate, ASME SA832 GR.23V, SA832 Gr.23V, SA832GR23V, SA-832 Grade 23V, Cr-Mo-V vessel plate, Direct Mill Supply by SHH STEEL
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