Jiangsu Steel Group Co., Limited

Stainless steel manufacturer OEM & ODM

403 Stainless Steel (UNS S40300)

Inquiries : 29 - 2015-10-30 15:16:16

1.Topics Covered

Introduction

Chemical Composition

Physical Properties

Mechanical Properties

Thermal Properties

Other Designations

Applications


2.Introduction

Stainless steels are high-alloy steels with good corrosion resistancedue to the presence of large amounts of chromium in these steels. Most of thestainless steels contain about 10% of chromium.

Stainless steels are available in three differentgroups based on their crystalline structure. These groups include martensitic,austenitic and ferritic. The combination of martensitic and ferritic steelsforms a fourth group of stainless steels known as precipitation-hardenedsteels.

The following datasheet provides an overview of grade 403 stainless steel.


3.ChemicalComposition

The chemical composition of grade 403 stainless steels outlined in the following table.

Element

Content (%)

Iron, Fe

86

Chromium, Cr

12.3

Manganese, Mn

1.0

Silicon, Si

0.50

Carbon, C

0.15

Phosphorous, P

0.040

Sulfur, S

0.030

Carbon, C

0.15


4.Physical Properties

The following table shows the physical properties ofgrade 403 stainless steel.

Properties

Metric

Imperial

Density

7.80 g/cm3

0.282 lb/in3


5.Mechanical Properties

The mechanical properties of grade 403 annealedstainless steel are displayed in the following table.

Properties

Metric

Imperial

Tensile strength

485 MPa

70300 psi

Yield strength (@strain  0.200 %)

310 MPa

45000 psi

Fatigue Strength  (annealed, @diameter 25mm/0.984 in)

275 MPa

39900 psi

Shear modulus (typical  for steel)

76.0 GPa

11000 ksi

Elastic modulus

190-210 GPa

27557-30458 ksi

Poisson's ratio

0.27-0.30

0.27-0.30

Elongation at break (in  50 mm)

25.00%

25.00%

Izod impact (tempered)

102 J

75.2 ft-lb

Hardness, Brinell  (converted from Rockwell B hardness)

139

139

Hardness, Knoop (converted  from Rockwell B hardness)

155

155

Hardness, Rockwell B

80

80

Hardness, Vickers  (converted from Rockwell B hardness)

153

153


6.Thermal Properties

The thermal properties of grade 403 stainless steelare given in the following table.

Properties

Metric

Imperial

Thermal expansion  co-efficient (@0-100C/32-212F)

9.90 m/mC

5.50 in/inF

Thermal conductivity  (@500C/932F)

21.5 W/mK

149 BTU in/hr.ft2.F


7.Other Designations

Equivalent materials to grade 403 stainless steel aregiven in the table below.

AISI 403

AISI 614

ASTM A176

ASTM A276

ASTM A473

ASTM A314

ASTM A479

ASTM A511

ASTM A580

DIN 1.4000

QQ S763

AMS 5611

AMS 5612

FED QQ-S-763

MIL SPEC MIL-S-862

SAE 51403

SAE J405 (51403)


8.Applications

Grade 403 stainless steel is used in turbine partsand compressor blades.