Alloy 4130 Chemical Composition
| C | Mn | P | S | Si | Cr | Mo |
| 0.28-0.33 | 0.7-0.9 | 0.015 | 0.010 | 0.25 | 0.8-1.1 | 0.20 |
Alloy 4130 Characteristics
We stock this quality of E-4130 to meet the regulations of API Spec.6A.
− Bars are heat treated to Designation 75K and are Charpy V-notch impact- tested to Classification K.
− Stocks also conform to NACE Standard MROI- 75 with a maximum hardness of HRC22/HB235. E-4130 is readily machineable and weldable
Alloy 4130 Typical Applications
Flanges, wellhead components, tool joints, etc.
Alloy 4130 Typical Heat Treatment
Forging
− Commence 1200˚C max.
− Finish 950˚C
− Annealing
− 830˚C/ 855˚C Cool slowly in furnace
− Normalizing
− 870˚C/ 930˚C Cool in air
− Hardened & Tempered: 840˚C/ 870˚C Water quench, 855˚C/ 885˚C Oil quench; 430˚C/ 700˚C According to properties required.
Alloy 4130 Mechanical Properties
Annealed Typical
− Tensile Strength – 80,000 psi
− Yield Strength – 80,000 psi
− Elongation – 28%
− Reduction of Area – 57%
− Hardness – 22 Rc Max, surface
Alloy 4130 stainless steel flange , A350 LF2 Cl1 forged Flanges , astm a350 lf2 cl1 cs flanges in Poland
