AISI 4330, 4330V, 4145, 4150 - alloy steel, data according to EN 10028-7:2016
Table of content:
| Standard | Grade | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical composition % | |||||||||||||||
| C: | Si: | Mn: | P: | S: | Cr: | Mo: | Al: | Ni: | V: | ||||||
| ASTM | AISI 4330V - UNS K23080 | ||||||||||||||
| 0.31 - 0.33 | 0.15 - 0.35 | 0.80 - 0.95 | <0.015 | <0.005 | 0.8 - 1.0 | 0.45 - 0.50 | 0.015 - 0.035 | - | 0.06 - 0.10 | ||||||
| ASTM | AISI 4150 - UNS G41500 | ||||||||||||||
| 0.48 - 0.53 | 0.15 - 0.35 | 0.75 - 1.00 | <0.035 | <0.04 | 0.8-1.1 | 0.15 - 0.25 | - | - | - | ||||||
| ASTM | AISI 4145 - UNS G41450 | ||||||||||||||
| 0.43 - 0.48 | 0.15 - 0.35 | 0.75 - 1.00 | <0.035 | <0.04 | 0.8-1.1 | 0.15 - 0.25 | - | - | - | ||||||
| ASTM | AISI 4330 Mod. - UNS K23080 | ||||||||||||||
| 0.28 - 0.33 | 0.20 - 0.35 | 0.75 - 1.00 | < 0.025 | < 0.025 | 0.70 - 0.95 | 0.35 - 0.50 | - | 1.65 - 2.00 | 0.05 - 0.10 | ||||||
AISI 4330V – description
High strength steel used in applications involving shock loading or stress concentration, for example drilling jars in oil and gas sectors or air frames and fasteners in aerospace industry.
AISI 4330V is basically AISI 4330 steel with strength and hardenability improved by the addition of vanadium. The type of 4330 steel with a significant addition of nickel is called "4330 mod."; Grades 4145 and 4150 are relatively hard, containing large amount of carbon, chromium and molybdenym.
Physical and mechanical properties
4330V alloy - general physical and mechanical properties:
- In ambient temperature:
- Density: 7.84 g/cm3
- Specific heat capacity: 0.16 cal/g/°C
AISI 4330V typical mechanical properties:
- 135 ksi Variant:
- Yield strength Re: > 931 MPa
- Tensile strength Rm: > 1000 MPa
- Elongation A: > 14 %
- Hardness HRC: 30-36
- Hardness HBW: 286-341
- Percent reduction of area Z: > 50 %
- Impact energy KV. 20°С: > 65 J
- Impact Value KV. -40°C: > 50 J
- 150 ksi Variant:
- Yield strength Re: > 1034 MPa
- Tensile strength Rm: > 1103 MPa
- Elongation A: > 14 %
- Hardness HRC: 34-40
- Hardness HBW: 321-375
- Percent reduction of area Z: > 45 %
- Impact energy KV. 20°С: > 54 J
- Impact Value KV. -40°C: > 30 J
- 155 ksi Variant:
- Yield strength Re: > 1069 MPa
- Tensile strength Rm: > 1138 MPa
- Elongation A: > 14 %
- Hardness HRC: 36-42
- Hardness HBW: 341-388
- Percent reduction of area Z: > 45 %
- Impact energy KV. 20°С: > 54 J
- Impact Value KV. -40°C: > 30 J
AISI 4150 typical mechanical properties:
- Normalized condition:
- Yield strength Re: > 734 MPa
- Tensile strength Rm: > 1155 MPa
- Elongation A: > 12 %
- Hardness HB: > 321
- Percent reduction of area Z: > 31 %
- Annealed condition:
- Yield strength Re: > 379 MPa
- Tensile strength Rm: > 730 MPa
- Elongation A: > 20 %
- Hardness HB: > 197
- Percent reduction of area Z: > 40 %
AISI 4145 typical mechanical properties:
- Diameter D: < 12.7 mm
- Hardness HRC: 39-44
- Diameter D: 12.7-25.4 mm
- Hardness HRC: 37-44
- Diameter D: 12.7-25.4 mm
- Yield strength Re: > 1055 MPa
- Tensile strength Rm: > 1172 MPa
- Elongation A: > 1055 %
- Hardness HRC: 37-44
- Percent reduction of area Z: > 35 %
Heat treatment and working
Recommended working and heat treatment parameters for AISI 4330V alloy:
- Forging: 1230-1070 °C
- Rolling: 1230-1070 °C
- Annealing: 820-860 °C
Recommended working and heat treatment parameters for AISI 4330V alloy:
We deliver this steel alloy as:
- Rods
- Sections
Replacements, equivalents and other designations:
AISI4145, AISI4150, AISI4330V, 4330, 4330+V, 4335+V Latrobe, 5029B, AMS6411, AMS6411D, AMS6427, AMS6427H, AMS6429, AMS6429D, AMS6430, AMS6430E, AMS6433, AMS6433D, AMS6434, AMS6434D, AMS6435, AMS6435C, ASTMA646, UNSK23080, UNSK33517, Lescalloy 4330+V, K33517, MIL S-8699, MIL S-46128