16Mo3 Hot Rolled Boiler Steel Plates

 

What Is 16Mo3?

16Mo3 is a chrome-molybdenum alloy steel plate conforming to EN 10028-2:2017. Specifically engineered for pressure vessel and boiler applications, this material is suitable for service conditions requiring elevated-temperature creep resistance and oxidation resistance. GNEE Steel supplies 16Mo3 plates in thicknesses ranging from 6 mm to 250 mm, with each plate fully certified to EN 10204 3.1 inspection certificates.

16Mo3 corresponds to material designation 1.5415 (Werkstoffnummer). The steel grade designation "16Mo3" indicates a nominal carbon content of 0.16% with molybdenum (approx. 0.3%) as the primary alloying element. The addition of molybdenum provides solid-solution strengthening and forms stable carbides resistant to coarsening at high temperatures, enabling safe operation at temperatures up to 530°C.

16Mo3 is widely specified in the fabrication of elevated-temperature pressure vessels, boilers, heat exchangers, and piping systems. Provided that proper procedure qualifications are followed-including preheating and post-weld heat treatment (PWHT) for heavier section sizes-the material exhibits excellent weldability and workability.

 

16Mo3 Hot Rolled Boiler Steel Plates Specification

Parameter	Range
Thickness	6 mm - 250 mm
Width	1,000 mm - 3,000 mm
Length	6,000 mm - 12,000 mm
Surface	As-rolled
Edge	Mill edge or cut edge

 

16Mo3 Hot Rolled Plate Chemical Composition

Element	Requirement (%)
C	0.12-0.20
Si	≤0.35
Mn	0.40-0.90
P	≤0.025
S	≤0.010
Cr	≤0.30
Mo	0.25-0.35
Cu	≤0.30
N	≤0.012

 

16Mo3 Hot Rolled Steel Plate Mechanical Properties

Thickness (mm)	YS (MPa, min)	TS (MPa)	Elongation (%)	Impact Temp (°C)	Impact Energy (J, min)
≤16	275	440	≥22	20	27
16-40	270	440	≥22	20	27
40-60	260	440	≥22	20	27
60-100	240	440	≥21	20	27
100-150	220	440	≥21	20	27
150-250	210	440	≥20	20	27

 

16Mo3 Boiler Quality Steel Plate Key Advantages

Strictly Controlled Chemical Composition

All 16Mo3 Boiler Quality Steel Plate are produced to the chemical tolerances specified in EN 10028-2-2017, ensuring consistent performance in your applications.

Specialized Technical Support

Our technical team has over 18 years of experience in steel plates, can provide welding recommendations and fabrication guidance for your project.

Guaranteed Mechanical Properties

We guarantee minimum yield strength of 275 MPa and minimum tensile strength of 440 MPa for 16Mo3 plates, tested per batch.

 

16Mo3 Comparison with Other Grades

Grade	Standard	Key Alloying	Max Temp	Typical Application	Key Difference
16Mo3 (EN 10028-2)	EN 10028-2	Mo 0.25-0.35%	≤500°C	Medium-high temp pressure vessels, boilers, heat exchangers	Mo-alloyed, superior creep resistance at elevated temperatures
P295GH (EN 10028-2)	EN 10028-2	Unalloyed (C-Mn)	≤400°C	General pressure vessels, moderate temperature service	Unalloyed, lower cost but limited to ≤400°C service
P355GH (EN 10028-2)	EN 10028-2	Unalloyed (C-Mn)	≤400°C	Higher strength pressure vessels, moderate temperature	Higher strength (YS≥355MPa) but still unalloyed, no creep advantage
13CrMo4-5 (EN 10028-2)	EN 10028-2	Cr 0.7-1.15%, Mo 0.4-0.6%	≤560°C	Higher creep strength, high-temp boiler components	Higher Cr-Mo content, better creep strength but higher cost than 16Mo3
A387 Gr12 Cl2 (ASTM)	ASTM A387	Cr 0.8-1.15%, Mo 0.45-0.6%	≤540°C	Similar to 13CrMo4-5, US standard equivalent	US standard equivalent to 13CrMo4-5, specified for ASME code projects

The comparison table above is for reference only. Material selection should be based on your specific project requirements and applicable standards.

 

Testing & Inspection

Test Item	Standard	Application	Acceptance Criteria
HIC (Hydrogen Induced Cracking) Resistance	NACE TM0284 / GB/T 8650	Wet H₂S sour service environments (crude oil/gas storage tanks and pipelines)	Report CLR/CTR/CSR ratios, acceptance criteria CLR ≤ 5% per specification
Ultrasonic Testing (UT) for Lamination	ASTM A578 / EN 10160 / GB/T 2970	Critical pressure vessel components and critical shipbuilding areas	Quality level according to specification
Ultrasonic Testing (UT) for Lamination	ASTM A578 / EN 10160 / GB/T 2970	Critical pressure vessel components and critical shipbuilding areas	Quality level according to specification

Note: Testing scope and acceptance criteria shall follow the project technical specification and the governing standard edition.

 

16Mo3 Steel Plate Typical Applications

16Mo3 is specified across multiple industries where high temperature performance is critical:

• Power generation: boiler drums, headers, superheater components using 16Mo3
• Petrochemical: process vessels, heat exchangers, reactors in hydrogen service
• Refining: hydrocracker reactors, high pressure separators, hot piping
• Industrial boilers: steam drums, water wall panels, economizer sections
• Waste-to-energy: combustion chamber liners, heat recovery steam generators

 

Why Choose GNEE Steel?

1. Professional cutting and processing services available (flame cut, plasma cut, drill, bend);
2. Professional technical support for material selection and project specification review;
3. Large inventory of common sizes available in stock for immediate shipment;
4. Direct factory pricing with no middleman markup;
5. Full MTC (Mill Test Certificate) provided with every shipment.

 

FAQ

Q: What standards govern the use of 16Mo3 in pressure vessels?

A: 16Mo3 is covered by EN 10028-2 for flat products. Pressure vessel design using 16Mo3 follows EN 13445 (European), ASME BPVC Section VIII (US), or GB 150 (Chinese) depending on the project jurisdiction. Each code provides specific allowable stress values.

 

Q: How does thickness affect the properties of 16Mo3?

A: Yield strength of 16Mo3 decreases with increasing thickness due to reduced cooling rates during normalizing. For plates up to 16 mm, the full yield strength is guaranteed. For thicker sections, the standard specifies reduced values that decrease progressively with thickness.

 

Q: What is the maximum operating temperature for 16Mo3 in continuous service?

A: 16Mo3 is suitable for continuous service up to 530°C. For short-term excursions, temperatures up to 550°C may be acceptable, but design life calculations should account for the accelerated creep rate at these higher temperatures.

 

 

 

We have enough 16Mo3 Hot Rolled Boiler Steel Plates in stock, and we can also customize it according to your needs.