Do you know pipe fittings with 4130 material?

Recently there is an order of elbows with 4130 material, more details below shows.

Material Description
Elbow 2D 114.3×17.12 45 4130 7.5K ABS NACE
Elbow 3D 139.7×31.75-90 4130 15K DB ABS NACE
Elbow 2D 114.3×17.12-90 4130 7.5K ABS NACE
Elbow 3D 139.7×31.75-45 4130 15K ABS NACE

This article will explain what the 4130 material is.

Alloy steels are designated by AISI four-digit numbers. They are more responsive to mechanical and heat treatments than carbon steels. They comprise different types of steels with compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va in the carbon steels.

AISI 4130 alloy steel contains chromium and molybdenum as strengthening agents. It has low carbon content, and can be welded easily. The data sheet below provides more detail.

Chemical Composition

Element Content(%)
Iron,Fe 97.03-98.22
Chromium,Cr 0.80-1.10
Manganese,Mn 0.40-0.60
Carbon,C 0.280-0.330
Silicon,Si 0.15-0.30
Molybdenum,Mo 0.15-0.25
Sulfur,S 0.040
Phosphorous,P 0.035

Physical Properties

Properties Metric Imperial
Density 7.85 g/cm³ 0.284 lb/in³
Melting Point 1432℃ 2610℉

Mechanical Properties

Properties Metric Imperial
Tensile strength,ultimate 560 MPa 81200 psi
Tensile strength,yield 460 Mpa 66700 psi
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Bulk modulus(Typical for steel) 140 GPa 20300 ksi
Shear modulus(Typical for steel) 80 GPa 11600 ksi
Poissons ratio 0.27-0.30 0.27-0.30
Elongation at break(in 50 mm) 21.50% 21.50%
Reduction of area 59.6 59.60%
Hardness,Brinell 217 217
Hardness,Knoop(Converted from Brinell hardness) 240 240
Hardness, Rockwell B(Converted from Brinell hardness) 95 95
Hardness, Rockwell C(Converted from Brinell hardness,value below normal HRC range,for comparison purposes only) 17 17
Hardness,Vickers(Converted from Brinell hardness) 228 228
Machinability (Annealed and cold drawn.Based on 100% machinability for AISI 1212 steel) 70 70

Other Designations

AMS 6348 AMS 6371 ASTM A331 ASTM A829 DIN 1.7218
AMS 6350 AMS 6373 ASTM A506 MIL S-18729 UNI 25 CrMo 4
AMS 6351 AMS 6374 ASTM A507 MIL S-6758 JIS SCCrM 1
AMS 6360 AMS 6528 ASTM A513 SAE J1397 JIS SCM 2
AMS 6361 AMS 7496 ASTM A519 SAE J404 SS 2225
AMS 6362 ASTM A29 ASTM A646 SAE J412 B.S. CDS 110
AMS 6370 ASTM A322 ASTM A752 AFNOR 25 CD 4(S) SAE J770

This low-alloy steel finds many applications as forgings in the aerospace and oil and gas industries as forged valve bodies and pumps, as well as in the automotive, agricultural and defense industries.

If you have interest,please contact us!