GB/T 4237 06Cr18Ni11Ti（321）Stainless Steel Plate Supplier

 

06Cr18Ni11Ti Stainless Steel Coil & Plate | GB/T 4237 06Cr18Ni11Ti（321) Stainless Steel Sheet Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and global exporter of GB/T 4237 06Cr18Ni11Ti stainless steel hot-rolled coils, plates, and wide heavy plates. Internationally recognized as Grade 321 — a classic titanium-stabilized austenitic stainless steel — 06Cr18Ni11Ti is specifically engineered to provide excellent resistance to intergranular corrosion after welding or prolonged exposure to temperatures in the 425–815°C (800–1500°F) sensitization range.

With 17–19% Cr, 9–12% Ni, and titanium stabilization (Ti ≥ 5 × C), 321 prevents chromium carbide precipitation at grain boundaries, maintaining full corrosion resistance in the heat-affected zone without the need for post-weld annealing in most applications. It offers the same excellent general corrosion resistance as 304 in atmospheric, mild chemical, and organic environments, combined with superior high-temperature oxidation resistance and creep strength up to 870°C intermittent.

Produced under GB/T 4237-2015 (Stainless Steel Hot-Rolled Sheets and Strips), Gangsteel supplies 06Cr18Ni11Ti in thicknesses from 2 mm to 500 mm and widths up to 4200 mm — one of the widest hot-rolling capabilities available worldwide. Our products are delivered in standard hot-rolled finishes No.1 (annealed & pickled) and 2D (annealed & pickled dull) and are exported globally to petrochemical, power generation, aerospace, heat exchanger, furnace, exhaust system, and high-temperature piping industries.

 

Why Choose Gangsteel for 06Cr18Ni11Ti (321) Hot-Rolled Stainless Steel?

Gangsteel’s wide heavy-plate rolling mills enable single-piece production of large heat exchanger tubesheets, furnace parts, exhaust manifolds, and welded piping spools, minimizing welds and improving long-term intergranular corrosion resistance. We maintain precise titanium-to-carbon ratio control and solution annealing to deliver consistent stabilization and high-temperature performance.

 

Chemical Composition of GB/T 4237 06Cr18Ni11Ti

Standard Chemical Composition Table

Element	Symbol	Minimum (%)	Maximum (%)	Typical Range (%)	Notes
Carbon	C	-	0.08	≤0.04–0.06	Low to support stabilization
Silicon	Si	-	1.00	≤0.50–0.80	Improves oxidation resistance
Manganese	Mn	-	2.00	≤1.00–1.50	Austenite stabilizer
Phosphorus	P	-	0.045	≤0.030	Controlled for weldability
Sulfur	S	-	0.030	≤0.015–0.020	Minimized for corrosion
Chromium	Cr	17.00	19.00	17.50–18.50	Forms protective passive layer
Nickel	Ni	9.00	12.00	9.50–11.00	Enhances ductility and resistance
Titanium	Ti	5 × C	0.70	0.30–0.60	Stabilization element (prevents IGC)
Iron	Fe	Balance	Balance	Balance	Base element

Gangsteel ensures the Ti/C ratio is well above 5:1 to fully bind carbon and provide maximum intergranular corrosion resistance.

 

Mechanical Properties

Mechanical Properties Table (Annealed Condition)

Property	Symbol	Minimum Requirement	Typical Value	Units	Notes
Tensile Strength	Rm	≥ 520	520–700	MPa	Good retention at elevated temps
Yield Strength (0.2% offset)	Rp0.2	≥ 205	220–340	MPa	Suitable for structural use
Elongation (50 mm gauge)	A50	≥ 40	40–55	%	Excellent ductility
Hardness (Rockwell B)	HRB	≤ 95	85–92	HRB	Soft, formable
Hardness (Brinell)	HB	≤ 217	170–200	HB	Reference
Bend Test (180°)	-	No cracks	Excellent	-	Ideal for forming

321 maintains useful strength and creep resistance at elevated temperatures (better than 304).

 

Physical Properties

Physical Properties Table

Property	Value (Metric)	Value (Imperial)	Temperature/Condition	Notes
Density	7.93–8.00 g/cm³	0.286–0.289 lb/in³	Room temperature	Austenitic standard
Elastic Modulus	193–200 GPa	28–29 × 10⁶psi	Room temperature	Typical
Thermal Conductivity	16.1–16.3 W/m·K	9.3–9.4 BTU/hr·ft·°F	100°C	Moderate
Specific Heat Capacity	500 J/kg·K	0.12 BTU/lb·°F	Room temperature	Standard
Coefficient of Thermal Expansion	16.6–18.6 × 10⁻⁶/°C	9.2–10.3 × 10⁻⁶/°F	0–100°C / higher at elevated	Increases with temperature
Electrical Resistivity	720 nΩ·m	27 μΩ·in	Room temperature	Austenitic norm
Melting Range	1400–1450°C	2550–2640°F	-	Approximate

 

Equivalent Materials Comparison Table

Standard	Grade / Designation	UNS Number	EN / W.Nr.	Other Designation	Key Notes / Differences
GB/T 4237	06Cr18Ni11Ti	-	-	321	Chinese hot-rolled Ti-stabilized spec
ASTM A240	321 (Type 321)	S32100	-	321	US equivalent; identical Ti-stabilized
EN 10088-2	X6CrNiTi18-10	-	1.4541	321	European match; Ti-stabilized
JIS G4304/5	SUS321	-	-	SUS321	Japanese equivalent
AISI / Trade	AISI 321 / Grade 321	S32100	1.4541	321	Global trade name; interchangeable
Related	321H (higher carbon)	S32109	1.4878	321H	High-carbon version for creep strength

Key Insight: 06Cr18Ni11Ti (321) provides excellent intergranular corrosion resistance at 425–815°C due to titanium stabilization, outperforming unstabilized 304 in welded high-temperature service.

Manufacturing Process: Hot Rolled at Gangsteel

Gangsteel's hot-rolling process for 06Cr18Ni11Ti includes:

1. Electric arc furnace + AOD refining → precise Ti/C ratio control
2. Continuous casting into wide slabs
3. Reheating to 1150–1250°C
4. Hot rolling on wide heavy-plate mills (up to 4200 mm width)
5. Controlled cooling, leveling, and descaling
6. Solution annealing + pickling for No.1 finish or shot blasting + pickling for 2D finish
7. Edge trimming, coil splitting, or cut-to-length

Thickness range: 2 mm – 500 mm Width range: up to 4200 mm Length: up to 18 m (plate) or coil form

Finishes: No.1 (annealed & pickled), 2D (annealed & pickled dull)

Available Forms, Sizes, and Specifications

• Hot-rolled coils: 2.0–25.0 mm thick, up to 4200 mm wide
• Hot-rolled plates: 2.0–500 mm thick, up to 4200 mm wide × 18 m long
• Cut-to-size plates, slit coils, custom blanks

All compliant with GB/T 4237-2015; optional third-party certification (SGS, TUV, BV).

Key Applications of 06Cr18Ni11Ti (321) Hot-Rolled Products

• Aerospace exhaust manifolds, jet engine parts, and thrust reversers
• Automotive exhaust systems and high-temperature piping
• Heat exchanger tubes and furnace components
• Boiler superheater tubes and reheater supports
• Chemical processing equipment exposed to cyclic temperatures
• Food and pharmaceutical processing with welded high-temp lines

Advantages of Choosing 06Cr18Ni11Ti (321)

• Excellent resistance to intergranular corrosion at 425–815°C
• Superior high-temperature oxidation resistance up to 870°C intermittent
• Outstanding weldability without post-weld annealing in most cases
• Good creep strength and thermal fatigue resistance
• Comparable general corrosion resistance to 304 in mild environments
• Cost-effective stabilized grade for high-temperature welded service
• Wide global acceptance and recyclability

Corrosion and Oxidation Resistance

Forms stable Cr oxide layer; resists atmospheric, mild acids, and organics. Titanium stabilization eliminates intergranular corrosion risk in sensitized range. Oxidation resistance up to ~870°C intermittent.

Weldability and Fabrication

Excellent weldability with TIG/MIG/resistance/laser; titanium prevents sensitization. Use ER321 or ER347 fillers. High ductility supports complex forming.

Why Choose Gangsteel for GB/T 4237 06Cr18Ni11Ti?

• Industry-leading width (up to 4200 mm) and thickness (up to 500 mm)
• Full traceability and third-party inspection
• Competitive pricing with large-scale production
• Fast lead times and global export expertise
• Technical support for high-temp welding, stabilization, and application

Quality Assurance and Certifications

Every heat is tested for chemistry, mechanical properties, surface quality, and dimensions. Full MTRs (EN 10204 3.1) and third-party certification available.

Packaging, Shipping, and Logistics

Coils eye-to-wall/eye-to-sky on steel pallets; plates bundled with skids; seaworthy export packaging with waterproof wrapping and edge protection.

 

FAQ

Q1: What is the main advantage of 321 (06Cr18Ni11Ti) over 304?

A: 321 is titanium-stabilized to prevent intergranular corrosion after welding or exposure to 425–815°C, making it suitable for high-temperature welded structures where 304 would be at risk of sensitization.

Q2: Can 06Cr18Ni11Ti be used in chloride-containing environments?

A: It has similar general corrosion resistance to 304 — moderate in mild chlorides — but not recommended for long-term marine or high-chloride service. Use 316L or 317L for better pitting resistance.

Q3: What finishes are available under GB/T 4237 for hot-rolled 321?

A: Standard finishes are No.1 (annealed & pickled) and 2D (annealed & pickled dull). No.1 is most common for further processing.

Q4: What is the maximum width and thickness Gangsteel can produce for 06Cr18Ni11Ti?

A: Up to 4200 mm wide and 500 mm thick in hot-rolled plates; coils typically 2–25 mm thick.

Q5: Is 321 weldable? What filler should be used?

A: Yes, excellent weldability. Use ER321 or ER347 fillers to match the titanium stabilization.

Q6: Does Gangsteel offer third-party inspection for GB/T 4237 321 material?

A: Yes — SGS, TUV, BV, or customer-nominated agencies are welcome at any stage.

Q7: What is the lead time for hot-rolled 06Cr18Ni11Ti coils or plates?

A: Standard sizes from stock: 7–15 days. Custom wide/heavy plates: 25–45 days depending on thickness and quantity.

Q8: Can Gangsteel provide 321 with BA or 2B finish?

A: Hot-rolled material is No.1 or 2D. For BA or 2B, we supply cold-rolled versions under GB/T 3280.

Keywords: 06Cr18Ni11Ti, 321 stainless steel, GB/T 4237 321, hot rolled 321 plate, 321 stainless coil, 321 sheet manufacturer

Contact Gangsteel today for real-time pricing, stock availability, samples, or custom specifications of GB/T 4237 06Cr18Ni11Ti (321) stainless steel hot-rolled coils, plates, and strips. Let us support your next high-temperature welded project with premium titanium-stabilized stainless steel solutions.