properites of carbon steels 1018 plus related metals

6/10/12 Properites of Carbon Steels 1018 plus related metals

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Carbon Steels 1018

Related Metals: StarDOM 1018(tm) Get Quotes

Specifications: AMS 5069

ASTM A29 (1018)

ASTM A510 (1018)

ASTM A512 (1018)

ASTM A513

ASTM A519 (1018)

ASTM A544 (1018)

ASTM A545 (1018)

ASTM A548 (1018)

ASTM A549 (1018)

ASTM A576 (1018)

ASTM A611 (D-1)

ASTM A635 (1018)

ASTM A659 (1018)

ASTM A794 (1018)

ASTM A830

MIL J-1397 (1018)

MIL J-403 (1018)

MIL J-412 (1018)

MIL S-11310 (CS 1018)

SAE J1397

SAE J403

SAE J412

UNS G10180

Chemistry Data

Carbon 0.14 - 0.2

Iron Balance

Manganese 0.6 - 0.9

Phosphorus 0.04 max

Sulphur 0.05 max

General Information

Principal Design Features



1018 is among the most commonly available grades available in the world. It is widely available

in cold finished rounds, squares, flat bar and hexagons. Despite its unimpressive mechanical

properties, the alloy is easily formed, machined, welded and fabricated. Due to its higher Mn

content, it can, in thin sections, be hardened to Rc 42.

Applications

The alloy is a free machining grade that is often employed in high volume screw machine parts

applications. It is commonly employed in shafts, spindles, pins, rods, sprocket assemblies and

an incredibly wide variety of component parts.

Machinability

1018 is rated at 62% of 1112 carbon steel. The alloy can be easily brought to a fine finish, its

chips are continuous and hard and it can be machined in all conditions.

Forming

1018 can be easily formed in the annealed condition.

Welding

1018 has been successfully welded using most all the common practices including gas,

resistance, oxyacetylene, and submerged melt welding.

Heat Treatment

1018 can, in thin sections be case hardened to Rc 42. In thicker sections, over 4", Rc 28-30 can

be obtained.

Forging

Forge this alloy in the range of 1825-2300 F.

Hot Working

1018 can easily be hot worked.

Cold Working

Cold working 1018 will have a significant affect on hardness and mechanical properties.

Intermediate annealing is required to overcome its tendency to work harden.

Annealing

A full anneal can be achieved by soaking at 1650 F followed by furnace cooling. Process

annealing can be done at 1200 F.

Hardening

See heat treatment and cold working notes.



Physical Data

Density (lb / cu. in.) 0.283

Specific Gravity 7.82

Specific Heat (Btu/lb/Deg

F - [32-212 Deg F])

0.116

Mean Coeff Thermal

Expansion

6.7

Mechanical Data

Form Round Bar

Condition Annealed

Temper 68

Tensile Strength 60

Yield Strength 44

Elongation 35

Reduction of Area 67

Brinnell 127

Form Round Bar

Condition Hot Rolled

Temper 68

Tensile Strength 68

Yield Strength 50

Elongation 36


Brinnell 143

Form Round Bar

Condition Normalized

Temper 68

Tensile Strength 66

Yield Strength 50

Elongation 36


Brinnell 135

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