CS 1030 burst failure

[willeng]

Could somebody inform me of the maximum tip velocity,
(Peripheral Speed)in meters/sec of CS 1030 Bright steel, it is an Australian grade steel.

I need to make sure it is suitable for the intended application & i don't want to exceed the burst failure limit.

How does heat have an affect on this figure.

I know i could use 4140,4130 or simillar grades but i don't think this would be required for this application--just want to make sure.
Any help with this would be appreciated. Thanks

 

[Metalguy]

I don't have the equation, but the YS of annealed/normalized 1030 steel is pretty low-50 ksi unless its very thin.

The YS will drop pretty fast with temp. Some heats can lose ~25% of room temp. YS by 500-600 deg.F.

 

[unclesyd]

1030 CS YS almost a straight line from a 400°F temper to 1200°F temp after normalizing @ 1700°F then reheating to 1600°F with a water quench.
Temper °F TS YS El
400 122,000 93,000 18%

800 108,000 85,000 22%

1200 75,000 58,000 345

 

[willeng]

Thanks guy's

Metal guy: what is ksi?.

unclesyd:

Just to make sure i have this right: correct me if i'm wrong

Ts = tensile strength
ys = yield strength
El = Elongation

Is this correct.

Is there a site where i can get the equation to work out the max tip velocity to prevent burst failure.
I need to know how fast i can spin these parts without any trouble.
THANKS

 

[unclesyd]

You are correct.
Ts = tensile strength
ys = yield strength
El = Elongation

 

[Metalguy]

ksi is psi times 1,000. It is a very common way to get rid of all those zeros.

You should be aware that size can have a great effect on the HT of steel. A plain carbon steel like 1030 will only develop moderately high strength if the thickness is no more than an inch or so.