AISI 1025 Carbon Steel (UNS G102500)

Sep 19 2012

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations

Introduction

Carbon steels are steels containing only carbon as their key alloying element. These steels also have traces of 0.4% silicon and 1.2% manganese. Small quantities of copper, nickel, molybdenum, aluminium and chromium can also be detected in the carbon steels.

The following datasheet provides an overview of the AISI 1025 carbon steel.

Chemical Composition

The chemical composition of the AISI 1025 carbon steel is outlined in the following table.

Element Content (%)
Iron, Fe 99.03-99.48
Carbon, C 0.220-0.280
Manganese, Mn 0.30-0.60
Sulfur, S ≤ 0.050
Phosphorous, P ≤ 0.040

Physical Properties

The following table shows the physical properties of the AISI 1025 carbon steel.

Properties Metric Imperial
Density 7.858 g/cm3 0.2839 lb/in³

Mechanical Properties

The mechanical properties of the cold drawn AISI 1025 carbon steel are displayed in the following table.

Properties Metric Imperial
Tensile strength 440 MPa 63800 psi
Yield strength 370 MPa 53700 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80.0 GPa 11600 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) 15.00% 15.00%
Reduction of area 40.00% 40.00%
Hardness, Brinell 126 126
Hardness, Knoop (converted from Brinell hardness) 145 145
Hardness, Rockwell B (converted from Brinell hardness) 71 71
Hardness, Vickers (converted from Brinell hardness) 131 131
Machinability (based on AISI 1212 steel as 100 machinability. The machinability of Group I bar, rod, and wire products can be improved by cold drawing.) 65 65

Thermal Properties

The thermal properties of the AISI 1025 carbon steel are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@0.000100°C/32-212°F) 12.1 µm/m°C 6.72 µin/in°F
Thermal conductivity (0ºC (32°F)) 51.9 W/mK 360 BTU in/hr.ft².°F

Other Designations

Equivalent materials to the AISI 1025 carbon steel are given in the following table.

AMS 5046 AMS 5075 AMS 5077 ASTM A29 ASTM A510
ASTM A512 ASTM A513 ASTM A519 ASTM A575 ASTM A576
MIL T-5066 MIL T-3520 MIL S-7952 MIL S-11310 (CS 1025) ASTM A830
QQ S-700 (C1025) SAE J1397 SAE J403 SAE J412

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