English
Español
Português
Français
what is 4130 steel
aisi 4130 steel (uns g41300), also known as 4130 chromoly steel, is a chrome-molybdenum series low alloy steel with high strength, toughness and hardenability, usually used in quenched and tempered condition.
4130 chrome moly tube (also known as chromoly) is an alloy steel with great versatility. the chromium and molybdenum content is sufficient to provide through hardness penetration in fairly light sections. it is naturally resistant to scaling and oxidation. it also responds to nitriding for excellent wear and abrasion resistance. the finish is clean and smooth both inside and out of the tubing. it is commonly utilized in aerospace, racing and cycling industries due to its superb strength to weight ratio.
aisi 4130 steel specification and relevant standards
country | usa | bs | bs | japan |
standard | astm a29 | en 10250/en10083 | bs 970 | jis g4105 |
grades | 4130 | 25crmo4/1.7218 | 708a25/708m25 | scm430 |
astm 4130 steels and equivalents chemical composition
standard | grade | c | mn | p | s | si | cr | mo |
astm a29 | 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
en10250 | 25crmo4/ | 0.22-0.29 | 0.60-0.90 | 0.025 | 0.035 | ≦0.40 | 0.90-1.2 | 0.15-0.30 |
jis g4105 | scm430/ | 0.28-0.33 | 0.60-0.85 | 0.030 | 0.030 | 0.15-0.35 | 0.90-1.2 | 0.15-0.30 |
aisi 4130 material properties
material aisi 4130 steel mechanical properties are given in the table below.
steel (uns) | tensile strength (mpa) | yield strength (mpa) | elongation in 50 mm, % | reduction in area, % | hardness (hb) | sample diameter | conditions |
aisi 4130 (g41300) | 670 | 435 | 25.5 | 59.5 | 197 | 25mm (1 inch) | normalized at 870 °c (1600 °f) |
560 | 460 | 21.5 | 59.5 | 217 | annealed at 865 °c (1585 °f) | ||
1040 | 979 | 18.1 | 63.9 | 302 | water quenched from 855 °c (1575 °f) & tempered at 540 °c (1000 °f) |
sae 4130 steel heat treatment
the following table shows alloy 4130 chromoly steel heat treatment and rockwell hardness.
chromoly 4130 steel heat treatment | |||
4130 heat treat |
| ||
