Tube / Round / 4130

4130 ROUND TUBE

CHROMOLY

Round Tube
Cold Drawn Normalized (CDN) Condition
Seamless
Common for Sand Rail – Dune Buggy Frames
Common for Race Car Frames
Common for Aircraft Frames
Through-Hardened
Chromium Molybdenum Alloy Steel
Good Formability

Typical Chemical Analysis

Carbon	(C)	=	.28-.33
Manganese	(MN)	=	.40-.60
Phosphorus	(P)	=	.035 Max
Sulphur	(S)	=	.040 Max
Silicone	(SI)	=	.15-.35
Chromium	(CR)	=	.80-1.1
Molybdenum	(MO)	=	.15-.25

Typical Mechanical Analysis

Tensile (PSI)	=	90#
Yield (PSI)	=	70#
Brinell Hardness	=	192
Machinability *	=	60-70%

* Machinability based on AISI-1212 as 100%

SOME SIZES SPECIAL ORDER
SIZE	INSIDE DIAMETER	LBS FT
3/8" OD x .065	0.245"	0.215
1/2" OD x .065	0.370"	0.156
5/8" OD x .049	0.527"	0.301
5/8" OD x .065	0.495"	0.389
5/8" OD x .083	0.459"	0.481
5/8" OD x .095	0.435"	0.538
5/8" OD x .120	0.385"	0.648
5/8" OD x .156	0.312"	0.781
3/4" OD x .049	0.625"	0.367
3/4" OD x .065	0.620"	0.476
3/4" OD x .083	0.584"	0.591
3/4" OD x .095	0.560"	0.665
3/4" OD x .120	0.510"	0.808
3/4" OD x .156	0.438"	0.990
7/8" OD x .065	0.475"	0.562
1" OD x .049	0.902"	0.498
1" OD x .065	0.870"	0.649
1" OD x .083	0.834"	0.813
1" OD x .095	0.810"	0.918
1" OD x .120	0.760"	1.128
1" OD x .156	0.687"	1.406
1-1/8" OD .065	0.996"	0.736
1-1/8" OD .083	0.959"	0.924
1-1/8" OD .095	0.935"	1.045
1-1/8" OD .120	0.885"	1.288
1-1/8" OD .156	0.812"	1.614
1-1/4" OD x .065	1.120"	0.823
1-1/4" OD x .083	1.084"	1.034
1-1/4" OD x .095	1.060"	1.172
1-1/4" OD x .120	1.010"	1.448
1-3/8" OD x .065	1.245"	0.910
1-3/8" OD x .083	1.210"	1.145
1-3/8" OD x .095	1.185"	1.299
1-3/8" OD x .120	1.135"	1.608
1-5/8" OD x .083	1.159"	1.367
1-5/8" OD x .095	1.552"	1.552
1-5/8" OD x .120	1.385"	1.929
1-3/4" OD x .083	1.584"	1.478
1-3/4" OD x .095	1.560"	1.679
1-3/4" OD x .120	1.510"	2.089