4130 Steel (also known as AISI 4130 & SAE 4130) is a chromium molybdenum low-alloy steel with considerably higher strength & toughness than the typical steel grade. Additionally, the reduced carbon level of this alloy, while limiting thickness strength, provides improved weldability over its 4140 steel counterpart. These attributes have made AISI 4130 a popular choice in the aeropspace industry for the construction of commercial and military aircraft parts that require a high strength, low weight make up. Examples include gears, piston pins and more. Other uses for 4130 steel include auto parts, cutting tools, and drill mining machinery.
At Rickard Specialty Metals, we have 30 years of experience supplying AISI 4130 steel forgings and many other product forms to your custom measurements and shapes. Our forging process includes open die forgings, ring rolling and more. See below for a list of the common 4130 forged shapes and product forms we offer.
NOMINAL COMPOSITION
- C .28 – .33
- Mn .40 – .60
- P .035 max
- S .040 max
- Si .2 – .35
- Cr .8 – 1.10
- Mo .15 – .25
STANDARD SPECIFICATIONS
- AISI 4130
- AMS 6348
- AMS 6350
- AMS 6351
- AMS 6360
- AMS 6361
- AMS 6362
- AMS 6370
- AMS 6371
- AMS 6373
- AMS 6374
- AMS 6528
- AMS 7496
- ASTM A29
- ASTM A322
- ASTM A331
- ASTM A506
- ASTM A507
- ASTM A513
- ASTM A519
- ASTM A646
- ASTM A752
- ASTM A829
- MIL S-18729
- MIL S-6758
- SAE J1397
- SAE J404
- SAE J412
- SAE J770
- SAE 4130
- UNS G41300
- DIN 1.7218
- UNI 25 CrMo 4
- JIS SCCrM 1
- JIS SCM 2
- SS 2225
- B.S. CDS 110
- AFNOR 25 CD 4 (S)
4130 STEEL FORGINGS
- Round Bar
- Flat Bar
- Rectangular Bar
- Rolled Rings
- Forged Rings
- Disc
OTHER PRODUCT FORMS
- Sheet
- Plate
- Extrusion
- Extrusion angles
- Billet
- Ingot
- Machined Parts