TP 317LMN • 1.4439

Manufacturer of TP 316LMN | TP 316LMN Stainless Steel

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Overview:

Krystal is a renowned exporter, manufacturer, stockist, supplier, and stockholder of high-quality TP 317LMN Stainless Steel Tubes and Pipes. These molybdenum and nitrogen alloyed products are widely recognized for their exceptional resistance to corrosion, especially in aggressive environments, and are ideal for applications requiring superior mechanical properties at high temperatures. TP 317LMN is used extensively in industries such as chemical processing, petrochemical, power generation, and other high-pressure applications.

TP 317LMN (1.4439 / UNS S31726) is a low carbon, nitrogen-enhanced variation of 317 stainless steel designed for improved resistance to pitting and crevice corrosion in harsh environments. The addition of nitrogen helps enhance the material’s strength, particularly at elevated temperatures, and improves its resistance to chlorides, sulfur compounds, and other corrosive agents. Its low carbon content ensures reduced risk of carbide precipitation and ensures high weldability, making it suitable for welded applications.

TP 317LMN offers high creep, stress-to-rupture, and tensile strength at high temperatures, which makes it highly valuable for critical applications in industries such as heat exchangers, chemical reactors, petroleum refining, power generation, and flue gas desulfurization units. Its combination of strength, corrosion resistance, and high-temperature performance makes TP 317LMN the material of choice for demanding applications in industries requiring superior performance under stress and exposure to aggressive media.

AVAILABLE TUBE PRODUCT FORMS
Straight Tube \| Straight Pipe \| U - Tube \| Coiled Tube

TYPICAL APPLICATIONS
HEAT EXCHANGERS
STEAM GENERATORS
REBOILER TUBES
BRINE HEATERS AND EVAPORATOR BODIES IN SALT PLANT
NUCLEAR CORE COOLING TUBES
SULPHURIC AND HYDROFLURIC ACID ALKYLATION PLANT
CONTROL LINES

TYPICAL MANUFACTURING SPECIFICATIONS
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Also individual customer specifications.

INDUSTRIES PREDOMINANTLY USING THIS GRADE
CHEMICAL PROCESSES
OIL AND GAS
NUCLEAR AND POWER

Technical Specifications

CHEMICAL COMPOSITION (% by weight)
Element	Min	Max
C	-	0.030
Mn	-	2.00
Si	-	1.00
P	-	0.045
S		0.015
Cr	16.50	18.50
Ni	12.50	14.50
Mo	4.00	5.00
N	0.12	0.22

PHYSICAL PROPERTIES (Room Temperature)
Specific Heat (0-100°C)	500	J.kg-1.°K-1
Thermal Conductivity	16.3	W.m -1.°K-1
Thermal Expansion	15.9	mm/m/°C
Modulus Elasticity	193	GPa
Electrical Resistivity	74	μOhm-cm
Density	8.00	g/cm³