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ASTM A312TP316 VS TP316L

Views: 15     Author: Site Editor     Publish Time: 2023-10-30      Origin: Site

ASTM A312 TP316 and TP316L are common materials for stainless steel pipes. This article will help you understand the differences between these two materials.

Chemical composition

Chemical

TP 316

TP 316L

C

0.08 max

0.035 max

Mn

2.00 max

2.00 max

P

0.045 max

0.045 max

S

0.030 max

0.030 max

Si

1.00 max

1.00 max

Cr

16.00-18.00

16.00-18.00

Ni

10.00-14.00

10.00-14.00

Mo

2.00-3.00

2.00-3.00

As the chemical composition table above, the main difference between ASTM A312 TP316 and 316L is the carbon content. 316L stainless steel is a low carbon version of 316 stainless steel, and the lower carbon content in 316L stainless steel can reduce harmful carbide precipitation caused by welding.

Mechanical Properties

Mechanical Properties

TP 316 (MPa)

TP 316L(MPa)

Tensile Strength

515 min

485 min

Yield strength

205 min

170 min

From the above data, it can be seen that the mechanical properties of ASTM A312 TP316 are stronger in tensile strength and yield strength than TP316L .This is due to the different carbon (C) content, which is a strong austenite-forming element that can significantly increase the strength of stainless steel.

Corrosion Resistance: TP316 has excellent corrosion resistance and can resist the corrosion of chloride ions and oxidizing media.TP316L has better corrosion resistance on the basis of TP316.

Application Ranges: TP316 is widely used in petroleum, chemical, power, metallurgical, and hydraulic tube industries.Due to its higher corrosion resistance and high strength, TP316L has a wider range of applications and can be used in harsher environmental conditions.

From the above analysis, it is not difficult to notice that although ASTM A312 TP316 and TP316L are both stainless steel materials, there are many differences . Therefore, customers should choose the appropriate stainless steel material basing on the specific using environment to measure its advantages and performance better.



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