AISI 1144 Hot Rolled Free Cutting Steel Round Bar Rods Y40Mn
1144 is a resulphurized carbon steel containing manganese and sulphur to provide a freemachining steel. It is recommended especially for high-production automatic machine products and machined parts requiring higher strength and wear resistance than is possible with lower carbon steels.
STANDARDS
1) ASTM A29
2) ASTM A108
CONDITIONS OF SUPPLY
Bright round bar up to 63.5mm diameter is all cold drawn.
Bright round bars of 63.5- 100mm diameter are cold drawn or smooth-turned and polished.
Bright round bars over 100mm diameter are all smooth-turned and polished.
All hexagon bar and all square bar is cold drawn.
Flat Bar is cold drawn and supplied sharp-edged.
TOLERANCES
- Drawn : H10
- Smooth-turned and polished : H10,H11
- Square Bar: H11
- Hex Bar: H11
- Flat Bar: H11
CHEMICAL COMPOSITION
| Element | C | Mn | P | S |
| AISI 1144 | 0.4%~0.48% | 1.35%~1.65%% | 0.04% | 0.24%~0.33% |
APPLICATIONS
- Domestic bin axles
- Concrete anchors
- Padlock shackles (case hardened)
- Hydraulic fittings
- Vice jaws (case hardened).
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