GB/T 4237 022Cr11NbTi S11173 Stainless Steel Plate Supplier
022Cr11NbTi S11173 plate at a glance
022Cr11NbTi is the dual-stabilized version of 409 (UNS S40930): Ti+Nb 8(C+N)+0.08 to 0.75%. Niobium refines weld grain and improves high-temperature strength compared with Ti-only 409L.
How to read the name: under GB/T 20878 the leading ‘022’ is the carbon code (here C ≤0.030%), then Cr11 = about 11% chromium; Nb = niobium added; Ti = titanium added. S11173 is the unified numeric code (ISC) used in GB/T 4237-2015.
SHH STEEL produces and exports ferritic stainless plate from China, works as a sales agent for leading stainless mills, and runs its own processing warehouse for cutting and surface finishing. 022Cr11NbTi is part of our GB/T 4237 stainless plate range; for comparison, see our ASTM A240 Type 409 page.
GB/T 4237 022Cr11NbTi specification details
| Item | GB/T 4237-2015 requirement / SHH STEEL supply |
|---|---|
| Standard | GB/T 4237-2015 Hot rolled stainless steel plate, sheet and strip (current edition, replaces GB/T 4237-2007) |
| Grade / unified code | 022Cr11NbTi / S11173 |
| Steel class | Ferritic |
| Chemical composition | Table 17 (heat analysis); product analysis per GB/T 222 |
| Mechanical properties | Table 22 |
| Product forms | Hot-rolled thick plate (3.0 – 200 mm in the standard), hot-rolled wide strip and cut plate (2.0 – 25.4 mm) |
| Our usual thickness range | 2 – 12 mm |
| Delivery condition | 800 – 900 °C, rapid or slow cooling |
| Surface | Hot rolled, heat treated, pickled (No.1 / 1D) as standard; ground or polished by agreement |
| Density | 7.7 g/cm³ |
| Certificate | EN 10204 3.1 mill certificate; 3.2 with third-party inspection on request |
Sister grades on the same standard are listed under GB/T 4237; cold-rolled sheet of the same chemistry is ordered to GB/T 3280, and all our plate lines sit in stainless steel sheets and plates.
Heat analysis limits for 022Cr11NbTi
| Element | 022Cr11NbTi heat analysis, % (Table 17) | Why it matters |
|---|---|---|
| C | ≤ 0.030 | Carbon. Low values protect welds from carbide precipitation; higher values add hot strength or hardenability. |
| Si | ≤ 1.00 | Silicon. Deoxidizer; in heat-resistant grades it builds a protective scale. |
| Mn | ≤ 1.00 | Manganese. Deoxidizer; in Mn-bearing grades it replaces nickel and keeps nitrogen in solution. |
| P | ≤ 0.040 | Phosphorus. Impurity, kept low for toughness and weld cracking resistance. |
| S | ≤ 0.020 | Sulfur. Impurity; low sulfur improves pitting resistance, hot workability and polishability. |
| Cr | 10.50 – 11.70 | Chromium. Forms the passive film; the main driver of corrosion and oxidation resistance. |
| Ni | ≤ 0.60 | Nickel. Stabilizes austenite, improves toughness and resistance to reducing acids. |
| N | ≤ 0.030 | Nitrogen. Strengthens, stabilizes austenite and adds pitting resistance (×16 in PREN). |
| Ti | ≥ 0.05 | Titanium. Ties up carbon and nitrogen (stabilization), or forms hardening precipitates in PH grades. |
| Other | Ti+Nb: 8 × (C+N)+0.08 – 0.75 | Stabilizing / special-element requirement of the standard |
| PREN (Cr + 3.3Mo + 16N) | 10.5 – 11.1 (minimum – mid-range) | Calculated from the limits above, not a requirement of GB/T 4237 |
Values are maximum unless a range is given. The mill reports the ladle (heat) analysis on the certificate; this is the figure to compare with Table 17.
Check analysis of 022Cr11NbTi plate
A check analysis drilled from the finished plate may differ slightly from the heat analysis. GB/T 4237 refers to GB/T 222 for the permitted deviations; the table applies them to the 022Cr11NbTi limits. Deviations apply to one side of a range only, never to both sides in the same heat.
| Element | Heat analysis limit (%) | Permitted deviation | Product analysis limit (%) |
|---|---|---|---|
| C | ≤ 0.030 | +0.005 | ≤ 0.035 |
| Si | ≤ 1.00 | ±0.05 | ≤ 1.05 |
| Mn | ≤ 1.00 | ±0.03 | ≤ 1.03 |
| P | ≤ 0.040 | +0.005 | ≤ 0.045 |
| S | ≤ 0.020 | +0.005 | ≤ 0.025 |
| Cr | 10.50 – 11.70 | ±0.15 | 10.35 – 11.85 |
| Ni | ≤ 0.60 | ±0.03 | ≤ 0.63 |
| N | ≤ 0.030 | ±0.01 | ≤ 0.040 |
| Ti | ≥ 0.05 | By agreement | By agreement |
Where the table says ‘by agreement’, the deviation is not tabulated for that content level and should be agreed in the contract, usually by reference to ASTM A480 Table A1.1.
Mechanical properties at room temperature
| Property | 022Cr11NbTi (Table 22) |
|---|---|
| Proof strength Rp0.2, MPa | ≥ 170 |
| Tensile strength Rm, MPa | ≥ 380 |
| Elongation A, % | ≥ 20 |
| Hardness HBW | ≤ 179 |
| Hardness HRB | ≤ 88 |
| Hardness HV | ≤ 200 |
| 180° bend (cold) | D=2a, no cracks on the outer surface |
Ferritic grades are tested in the annealed condition; the bend test is part of acceptance.
What to expect from ferritic stainless plate
022Cr11NbTi is ferritic: it is magnetic, has lower thermal expansion and better thermal conductivity than austenitic steel, and is immune to chloride stress corrosion cracking. Those properties make it a good choice for heat exchangers, hot water tanks and exhaust parts.
The trade-off is toughness. Ferritic stainless has a ductile-brittle transition, and it moves to higher temperature with thickness and grain size. This is why ferritic plate is mostly thin; for sections above about 6 mm ask for Charpy data or bend in a warm shop.
Ferritic grades contain little or no nickel, so their price is far more stable than GB/T 4237 06Cr19Ni10 S30408 (304).
Cross-reference to other standards
| Standard system | Equivalent / closest grade |
|---|---|
| China GB/T 4237-2015 | 022Cr11NbTi (S11173) |
| ASTM A240/A240M | S40930 |
| EN 10088-2 | — |
| JIS G4304 (hot rolled) | — |
| Common name | 409 (Nb+Ti) |
Equivalent grades are close in chemistry and properties but are never identical: limits on carbon, nitrogen and residual elements differ. For dual or multiple certification the heat must meet every standard named on the order, and we confirm that from the heat chemistry before quotation.
Related pages: ASTM A240 Type 409, JIS G4305 SUS409, AISI 409. See also our ASTM A240/A240M and JIS G4305 plate lists.
Corrosion resistance and PREN of 022Cr11NbTi
11–13% chromium ferritics resist mild atmospheres, exhaust condensates and wet abrasion far better than carbon steel, but they will show surface rust in humid or salty air.
PREN of 022Cr11NbTi from the GB/T 4237 limits: 10.5 – 11.1. PREN is a ranking tool for pitting in chlorides, not a guarantee; temperature, crevices, deposits and weld finish matter as much.
Intergranular corrosion testing of ferritic and martensitic plate is by agreement (GB/T 4334 or ASTM A763 practices).
If service is harsher than 022Cr11NbTi can handle, the next step up in this batch is GB/T 4237 022Cr15NbTi S11573.
Fabrication guidance
Weld 11–13% Cr ferritics with low heat input. Fillers: ER409Nb for matching welds, ER309L when a tougher austenitic weld is acceptable.
Grain growth in the HAZ is the main risk; keep interpass low and avoid multiple re-heating of the same zone. Preheat is normally not needed below 6 mm.
Cutting: we cut 022Cr11NbTi by plasma (up to about 150 mm), laser (thin plate) or waterjet, and remove the heat-affected edge by machining where the drawing requires it.
How 022Cr11NbTi plate is heat treated
Recommended heat treatment for 022Cr11NbTi (GB/T 4237-2015 Annex C): 800 – 900 °C, rapid or slow cooling.
Ferritic grades are annealed, not solution treated, and do not harden on cooling in the normal range.
Choosing between 022Cr11NbTi and its neighbours
The table compares 022Cr11NbTi with the grades buyers most often weigh it against. Strength values are GB/T 4237-2015 minimums; PREN is calculated from the minimum chemistry.
| Grade (GB/T 4237) | Key chemistry, % | PREN min | Rp0.2 min, MPa | Rm min, MPa |
|---|---|---|---|---|
| 022Cr11NbTi S11173 | C ≤ 0.030, Cr 10.50 – 11.70, Ni ≤ 0.60, N ≤ 0.030, Ti ≥ 0.05 | 10.5 | 170 | 380 |
| GB/T 4237 022Cr11Ti S11163 | C ≤ 0.030, Cr 10.50 – 11.75, Ni ≤ 0.60, N ≤ 0.030, Ti 0.15 – 0.50, Nb ≤ 0.10 | 10.5 | 170 | 380 |
| GB/T 4237 022Cr15NbTi S11573 | C ≤ 0.030, Cr 14.00 – 16.00, Ni ≤ 0.60, Mo ≤ 0.50, N ≤ 0.030 | 14.0 | 205 | 450 |
| GB/T 4237 022Cr12 S11203 | C ≤ 0.030, Cr 11.00 – 13.50, Ni ≤ 0.60 | 11.0 | 195 | 360 |
Chemistry note: GB/T 4237-2015 gives Ti ≥0.05% in addition to the Ti+Nb formula. Same 11% chromium corrosion limitations as 409L.
Applications of 022Cr11NbTi plate
Typical uses:
- Exhaust systems
- Catalytic converter housings
- Hot-water heater parts
- Container parts
Buyers specifying 022Cr11NbTi for these jobs often compare it with GB/T 4237 022Cr11Ti S11163 and GB/T 4237 022Cr12 S11203; the comparison table on this page shows the differences.
International grade pages for the alternatives mentioned above: ASTM A240 Type 409L, ASTM A240 Type 429, JIS G4305 SUS410L.
Surface options and cut-to-size service
| Finish | Description | Availability for this grade |
|---|---|---|
| No.1 / 1D | Hot rolled, heat treated, pickled; the GB/T 4237 standard surface | Standard |
| Shot-blasted + pickled | Uniform matte for welded structures | On request |
| No.4 / brushed | Abrasive finish, grit 150–180 | Warehouse processing, thin plate |
| HL (hairline) | Long continuous lines, decorative | Warehouse processing, thin plate |
| 8K mirror | Polished reflective finish | Warehouse processing, limited sizes |
| 2B / BA | Cold-rolled finishes (ordered as GB/T 3280 sheet, not hot-rolled plate) | Sheet only |
Our warehouse cuts plate to size (plasma, laser, waterjet, saw), bevels weld edges, polishes and applies PVC protective film. Processed plate ships with the original mill heat number marked. Ask for cut pieces of other stainless steel products at the same time to consolidate freight.
Sizes, tolerances and weight
| Dimension | Typical supply |
|---|---|
| Thickness | 2 – 12 mm |
| Width | 1 000 / 1 219 / 1 250 / 1 500 / 1 800 / 2 000 mm; wider by mill order |
| Length | 2 000 / 2 438 / 3 000 / 6 000 mm or cut to size |
| Flatness | Per GB/T 4237; ≤15 mm per metre for plate up to 25 mm unless agreed tighter |
| Thickness tolerance | Per the GB/T 4237 dimensional tolerance tables (normal or higher accuracy as ordered) |
| Edge | Mill edge or cut edge |
Weight: plate mass in kg/m² = thickness (mm) × density (7.7 g/cm³). A 10 mm 022Cr11NbTi plate weighs about 77.0 kg/m²; a 1 500 × 6 000 × 10 mm plate about 693 kg.
Inspection, tests and mill certificates
- Heat chemical analysis on every heat; product analysis by agreement
- Tensile test (Rp0.2, Rm, A) per batch
- Hardness test
- 180° bend test
- Ultrasonic testing (NB/T 47013.3 or ASTM A578) when specified
- Positive material identification (PMI) on every plate leaving our warehouse
- Visual and dimensional inspection; third-party inspection (SGS, BV, TÜV, Intertek) at the buyer’s request
Certificates follow EN 10204 3.1 as standard. Where plate is also certified to ASME SA240 or ASTM A240, both standards are shown on one certificate.
Ordering information
- Standard and edition: GB/T 4237-2015
- Grade and code: 022Cr11NbTi (S11173); add the equivalent if dual certification is needed
- Thickness × width × length, quantity in pieces or tonnes
- Thickness tolerance class and flatness if tighter than standard
- Surface finish and protective film
- Tests beyond the standard (IGC, UT, impact, ferrite, PMI, grain size)
- Certificate type (EN 10204 3.1 / 3.2) and inspection body
- Marking, packing (wooden cases, steel pallets) and delivery terms
Send the list to SHH STEEL and we return a quotation with mill, lead time and stock options. Other grades from the same standard can be combined in one shipment; browse GB/T 4237 plate grades.
Mill sourcing and lead time
022Cr11NbTi is a mainstream grade at Chinese stainless mills. We supply it from our own stock and processing warehouse, and by mill order from major producers such as TISCO and Baosteel Stainless, for which we act as a sales agent. Stock plate ships in about 1–2 weeks after cutting; mill orders typically take 30–60 days depending on thickness and rolling schedule.
Every plate is traceable to its heat number, and copies of the mill certificates stay on file for repeat orders and audits. The same mills also supply our ASTM A240, ASME SA240, JIS G4305 and AISI plate ranges, so mixed-standard orders can ship together.
Why buy from SHH STEEL
- Mill-direct prices with our own export documentation
- Own processing warehouse: cutting, bevelling, polishing, PVC film
- PMI and dimensional check before packing
- Mixed-grade shipments across our AISI stainless and GB/T plate ranges
- Technical answers from people who read the standard, not just the price list
SHH STEEL has exported stainless and carbon steel plate to buyers in Asia, the Middle East, Africa, Europe and the Americas.
FAQ
- What is the difference between 022Cr11NbTi and 022Cr11Ti?
- 022Cr11Ti (409L) is stabilized by titanium only. 022Cr11NbTi (S11173, S40930 type) uses titanium plus niobium, Ti+Nb = 8×(C+N)+0.08 to 0.75%, giving finer weld grain and slightly better hot strength. Mechanical minimums are the same.
- What is the chemical composition of 022Cr11NbTi?
- Under GB/T 4237-2015 Table 17, 022Cr11NbTi (S11173) has C ≤ 0.030, Cr 10.50 – 11.70, Ni ≤ 0.60, N ≤ 0.030, Ti ≥ 0.05; Ti+Nb: 8 × (C+N)+0.08 – 0.75. Phosphorus is limited to ≤0.040% and sulfur to ≤0.020%.
- What is the ASTM equivalent of 022Cr11NbTi?
- The closest equivalents of 022Cr11NbTi (S11173) are S40930 in ASTM (common name: 409 (Nb+Ti)). Chemistry limits differ slightly, so dual certification depends on the actual heat.
- What are the mechanical properties of 022Cr11NbTi plate?
- GB/T 4237-2015 Table 22 requires for 022Cr11NbTi: proof strength Rp0.2 ≥170 MPa, tensile strength ≥380 MPa and elongation ≥20%, hardness ≤179 HBW. Values apply to plate in the delivery heat-treated condition.
- Is 022Cr11NbTi stainless steel magnetic?
- Yes. 022Cr11NbTi is ferritic and is magnetic in all conditions.
- What thickness of 022Cr11NbTi plate can you supply?
- Under GB/T 4237 we supply 022Cr11NbTi hot-rolled plate in 2 – 12 mm, widths up to 2 000 mm (wider by mill order), cut to size in our warehouse. Thinner material is cold-rolled sheet to GB/T 3280.
Conclusion
GB/T 4237 022Cr11NbTi (S11173) is a 11–13% chromium ferritic plate grade, known internationally as 409 (Nb+Ti) / S40930. It is defined by Table 17 chemistry (C ≤ 0.030, Cr 10.50 – 11.70, Ni ≤ 0.60, N ≤ 0.030, Ti ≥ 0.05) and Table 22 properties of at least 170 MPa proof strength and 380 MPa tensile strength. Typical uses include exhaust systems, catalytic converter housings and hot-water heater parts. Chemistry note: GB/T 4237-2015 gives Ti ≥0.05% in addition to the Ti+Nb formula.
Before ordering, state the standard edition, the grade name with its code, and any extra tests, so that the mill certificate matches your design documents. SHH STEEL supplies 022Cr11NbTi plate from stock and by mill order, cut to size and finished in our own warehouse, with EN 10204 3.1 certificates. For related grades see GB/T 4237 022Cr11Ti S11163 and GB/T 4237 022Cr15NbTi S11573, our GB/T 4237 category and the ASTM A240 Type 409 page. Send your sizes and quantities for a quotation.
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