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Specification and Properties of stainless steel grades 316

Specification and Properties of stainless steel grades 316

In this article, Specification and Properties of stainless steel grades 316 will be illustrated. If you are looking for stainless steel grade products, contact Mirach Metallurgy Co.,Limited for detail.

stainless-steel-grades-316

Key Properties

These properties are specified for flat rolled product (plate, sheet and coil) in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.

Composition

Table 1. Composition ranges for 316 grade of stainless steels.

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

316

Min

0

16.0

2.00

10.0

Max

0.08

2.0

0.75

0.045

0.03

18.0

3.00

14.0

0.10

316L

Min

16.0

2.00

10.0

Max

0.03

2.0

0.75

0.045

0.03

18.0

3.00

14.0

0.10

316H

Min

0.04

0.04

0

16.0

2.00

10.0

max

0.10

0.10

0.75

0.045

0.03

18.0

3.00

14.0

Mechanical Properties

Table 2. Mechanical properties of 316 grade stainless steels.

Grade

Tensile Str
(MPa) min

Yield Str
0.2% Proof
(MPa) min

Elong
(% in 50mm) min

Hardness

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

Note: 316H also has a requirement for a grain size of ASTM no. 7 or coarser.

Physical Properties

Table 3. Typical physical properties for 316 grade stainless steels.

Grade

Density
(kg/m3)

Elastic Modulus
(GPa)

Mean Co-eff of Thermal Expansion (µm/m/°C)

Thermal Conductivity
(W/m.K)

Specific Heat 0-100°C
(J/kg.K)

Elec Resistivity
(n.m)

0-100°C

0-315°C

0-538°C

At 100°C

At 500°C

316/L/H

8000

193

15.9

16.2

17.5

16.3

21.5

500

740

Grade Specification Comparison

Table 4. Grade specifications for 316 grade stainless steels.

Grade

UNS
No

Old British

Euronorm

Swedish
SS

Japanese
JIS

BS

En

No

Name

316

S31600

316S31

58H, 58J

1.4401

X5CrNiMo17-12-2

2347

SUS 316

316L

S31603

316S11

1.4404

X2CrNiMo17-12-2

2348

SUS 316L

316H

S31609

316S51

Note: These comparisons are approximate only. The list is intended as a comparison of functionally similar materialsnot as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Possible Alternative Grades

Table 5. Possible alternative grades to 316 stainless steel.

Grade Why 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