Room temperature mechanical properties of 0Cr19Ni9N (AISI304N) and 00Cr18Ni10N (AISI3041N)

Comparison of Room Temperature Mechanical Properties Between AISI304N (00Cr19Ni9N) and AISI304N (00Cr18Ni10N)

The mechanical properties of AISI304N (00Cr19Ni9N) and AISI304N (00Cr18Ni10N) are compared. Both materials are austenitic stainless steels and are widely used in various engineering design applications. While the two materials contain some differences in composition and properties, they do share some common characteristics. This article will provide a comparative overview of room temperature mechanical properties of the two materials, including such mechanical characteristics as metal yield strength, ultimate tensile strength, elongation, reduction in area, and hardness.

The room temperature yield strength for AISI304N (00Cr19Ni9N) is about 200MPa, whereas for AISI304N (00Cr18Ni10N) it is about 180MPa. The yield strength for both is similar but AISI304N (00Cr19Ni9N) exhibits a slightly higher yield strength compared to AISI304N (00Cr18Ni10N). Both materials exhibit relatively good levels of tensile strength at room temperature. The ultimate tensile strength of AISI304N (00Cr19Ni9N) is approximately 500MPa while that of AISI304N (00Cr18Ni10N) is 400MPa. AISI304N (00Cr19Ni9N) therefore exhibits a higher tensile strength compared to AISI304N (00Cr18Ni10N).

The two austenitic stainless steel grades also demonstrate different levels of elongation and reduction in area when tested at room temperature. AISI304N (00Cr19Ni9N) demonstrated an elongation of approximately 40% whereas AISI304N (00Cr18Ni10N) demonstrated an elongation of between 20-30%. Similarly, AISI304N (00Cr19Ni9N) demonstrates a reduction in area of 60-70%, compared to the 40-50% reduction in area exhibited by AISI304N (00Cr18Ni10N).

The hardness of both materials is affected by their composition, but also by the different tempering and heat treatments used when forming them. AISI304N (00Cr19Ni9N) is typically furnished in the annealed condition with a hardness between 210-240 Brinell, while AISI304N (00Cr18Ni10N) is generally supplied in the tempered condition with a hardness between 150- 190 Brinell.

In conclusion, AISI304N (00Cr19Ni9N) demonstrates a higher yield strength, ultimate tensile strength, and hardness than AISI304N (00Cr18Ni10N). It also exhibits a higher level of elongation and reduction in area than its counterpart. While both materials have similar applications, AISI304N (00Cr19Ni9N) may be a more suitable choice for certain engineering design applications where higher strength and hardness are desired.

AISI 304N (#0Cr19Ni9N) and AISI 304N (#00Cr18Ni10N) are two common grades of stainless steel. AISI 304N is an austenitic stainless steel, while AISI 304LN is a lean austenitic stainless steel. Both grades of stainless steel possess excellent mechanical properties at ambient temperatures.

AISI 304N has a tensile strength of 515 MPa (74,000 psi) and a yield strength of 205 MPa (29,500 psi), with an elongation rate at break of about 40%. AISI 304LN, on the other hand, has a slightly lower tensile strength of 500 MPa (72,500 psi) and a yield strength of 190 MPa (27,500 psi), but with an slightly better elongation rate at break of 45%.

Both grades of stainless steel have excellent fatigue strength at room temperature. AISI 304N has a fatigue strength of 345 MPa (50,000 psi) at 106 cycles, while AISI 304LN has a fatigue strength of 320 MPa (46,000 psi) at 106 cycles. Both grades of stainless steel possess high fracture toughness when warm worked. AISI 304N has a fracture toughness of 50 MPa·m1/2 (7,400 psi·in1/2) at ambient temperatures, while AISI 304LN has a fracture toughness of 45 MPa·m1/2 (6,600 psi·in1/2).

In regards to hardness, AISI 304N has a Brinell hardness of 180 HB, whereas AISI 304LN has a Brinell hardness of 150 HB. Both grades of stainless steel possess very good corrosion resistance when exposed to an oxidizing atmosphere due to their chromium content.

In conclusion, both AISI 304N and AISI 304LN exhibit excellent mechanical properties at ambient temperatures, including high tensile and yield strength, good fracture toughness, and excellent fatigue strength. Additionally, both grades have excellent oxidation and corrosion resistance due to their chromium content.