Stainless 316 Tube Shield

Product Details

Product Description

Product Description
Stainless 316 tube shields are made of 316 stainless steel and can be customized to fit perfectly straight sections, curved sections and even finned and specialty tubes.
Stainless steel 316 (SS316) is an austenitic chromium-nickel stainless steel containing deliberate amount of molybdenum which increases general corrosion resistance and especially improves its pitting resistance to chloride ion solutions.
Chemical Compostion of 316 stainless steel
The chemical composition of ASTM A240 Grade 316/316L Stainless Steel is outlined in the following table
GradeScopeCMnSiPSCrMoNiN

316	Min	-	-	-	0	-	16	2	10	-
	Max	0.08	2	0.75	0.045	0.03	18	3	14	0.1
316L	Min	-	-	-	-	-	16	2	10	-
	Max	0.03	2	0.75	0.045	0.03	18	3	14	0.1
316H	Min	0.04	0.04	0	-	-	16	2	10	-
	max	0.1	0.1	0.75	0.045	0.03	18	3	14	-

Mechanical and Physical Properties of 316 Stainless steel
GradeTensile StrYield Str
0.2% ProofElongHardness

	(MPa) min	(MPa) min	(% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
316	515	205	40	95	217
316L	485	170	40	95	217
316H	515	205	40	95	217

Possible alternative grades to 316 stainless steel
GradeWhy it might be chosen instead of 316?

316Ti	Better resistance to temperatures of around 600-900 °C is needed.
316N	Higher strength than standard 316.
317L	Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.
904L	Much higher resistance to chlorides at elevated temperatures, with good formability
2205	Much higher resistance to chlorides at elevated temperatures, and higher strength than 316

Stainless steel standards of 316/316L steel
316316L

ASTM A240	ASTM A240
ASTM A666	ASTM A666
ASME SA240	ASME SA240
AMS 5524	AMS 5507

The main difference between 316 and 316l stainless steel is in their carbon content. The 316L stainless steel compared to the 316 variant has a lower carbon content. Therefore, in terms of use for example, use related to corrosion, 316L is more capable than 316 stainless steel.
Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade 316 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). Grade 316H, with its higher carbon content has application at elevated temperatures, as does stabilised grade 316Ti.
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Shapes and specifications of tube shields
The cross-sectional shape of boiler tubes shields is mostly semi-circular (180 degrees), and there are also 120-160 degrees. It is mainly used on finned tubes (water-cooled walls); boiler tubes erosion shields are divided into direct wear-resistant shields, in-curve anti-wear shields, outer-curve anti-wear shields, side-curve anti-wear shields, s-curve anti-wear shields, etc.