Steel Usibor 1500 · finish state · default condition
Steel Usibor 1500 Aluminized
Properties of the Aluminized condition, compared with the other Usibor 1500 tempers.
Standard supply condition for hot-stamping lines: soft enough to blank and pre-form, coating prevents scaling in the austenitizing furnace.
What is Usibor 1500 Aluminized?
Usibor 1500 Aluminized is Usibor 1500 supplied in the Aluminized condition — standard supply condition for hot-stamping lines: soft enough to blank and pre-form, coating prevents scaling in the austenitizing furnace. Usibor 1500 Aluminized has a yield strength of 400 MPa (58 ksi) and a tensile strength of 600 MPa (87 ksi) — weaker than 60% of steel grades. Elongation at break is 15% and the elastic modulus is 210 GPa (30.5 Msi). Usibor 1500 Aluminized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F).
Advantages
- Good corrosion resistance — 35/100, better than 97% of steel grades
Limitations
- Hard to polish — 40/100, worse than 96% of steel grades
- Poor heat conductor — 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades
Usibor 1500 Aluminized properties
Typical room-temperature values for Usibor 1500 Aluminized — 11 properties are specific to this condition; the rest are grade-level values shared by every Usibor 1500 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
Usibor 1500 Aluminized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F).
Mechanical13
Usibor 1500 Aluminized has a yield strength of 400 MPa (58 ksi) and a tensile strength of 600 MPa (87 ksi) — weaker than 60% of steel grades. Elongation at break is 15% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
Usibor 1500 Aluminized is rated for continuous service to 350°C (662 °F). It conducts heat at 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
Usibor 1500 Aluminized conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental3
Corrosion resistance is fair (35/100), better than 97% of steel grades.
Sustainability4
Producing a kilogram of Usibor 1500 Aluminized takes about 30 MJ of energy and emits 2.4 kg of CO₂ — more than 55% of steel grades. Typical recycled content is 20%.
Manufacturability7
Usibor 1500 Aluminized's machinability is good (55/100, better than 62% of steel grades); weldability very good (70/100); formability good (55/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other Usibor 1500 tempers and conditions
Usibor 1500 is also supplied in 3 other conditions. The full side-by-side table is on the Usibor 1500 overview.
- AluminizedDefaultStandard supply condition for hot-stamping lines: soft enough to blank and pre-form, coating prevents scaling in the austenitizing furnace.400 MPa yield · 180 HB
- PHSThe in-service condition of every hot-stamped part: maximum strength and intrusion resistance, but almost no ductility, no cold forming and laser trimming only.1,100 MPa yield · 48 HRC
Working with Usibor 1500 Aluminized
Is Usibor 1500 easy to machine?
Blank and pierce in the as-delivered soft state; after press hardening use laser cutting or CBN/ceramic hard trimming — conventional drilling/milling of 480 HV martensite is impractical.
Can Usibor 1500 be welded?
Resistance spot welding is production-proven (higher current/longer weld time than uncoated steel); for laser welding of blanks the Al-Si layer must be ablated to avoid brittle Fe-Al intermetallics in the fusion zone; avoid arc welding on hardened parts (HAZ softening).
Can Usibor 1500 be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and quench in cooled dies at >27 °C/s to full martensite; springback is minimal but cooling-rate control drives final strength.
What surface finishes work on Usibor 1500?
Al-Si coating tolerates phosphating/e-coat with adapted pretreatment; shot blasting of coated parts is not needed, cut edges and welds must be sealed/painted since the coating is not sacrificial.
Usibor 1500 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C22MnB5 base | 0.19 – 0.25 | 0.22 |
| Si | 0.15 – 0.4 | 0.25 |
| Mn | 1.1 – 1.4 | 1.25 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.01 | 0 |
| Albase metal, excluding Al-Si coating | 0.02 – 0.06 | 0.04 |
| Cr | 0.1 – 0.35 | 0.2 |
| Tiprotects boron from N | 0.02 – 0.05 | 0.04 |
| Bhardenability | 0 – 0.01 | 0 |
| N | ≤ 0.01 | 0.01 |
| Fe | balance | — |
Usibor 1500 Aluminized — frequently asked
What is Usibor 1500 Aluminized used for?
Usibor 1500 Aluminized is typically used for A- and B-pillar reinforcements, door impact beams, bumper beams, roof rails and side sills, tunnel and floor cross members and front and rear longitudinal rails. In short: aluminized hot-stamping boron.
What is the yield strength of Usibor 1500 Aluminized?
Usibor 1500 Aluminized has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 600 MPa (87 ksi) — weaker than 60% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is Usibor 1500 Aluminized easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Blank and pierce in the as-delivered soft state; after press hardening use laser cutting or CBN/ceramic hard trimming — conventional drilling/milling of 480 HV martensite is impractical.
Can Usibor 1500 Aluminized be welded?
Yes — weldability is rated very good (70/100). Resistance spot welding is production-proven (higher current/longer weld time than uncoated steel); for laser welding of blanks the Al-Si layer must be ablated to avoid brittle Fe-Al intermetallics in the fusion zone; avoid arc welding on hardened parts (HAZ softening).
What surface finishes work on Usibor 1500 Aluminized?
Al-Si coating tolerates phosphating/e-coat with adapted pretreatment; shot blasting of coated parts is not needed, cut edges and welds must be sealed/painted since the coating is not sacrificial.
Can Usibor 1500 Aluminized be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and quench in cooled dies at >27 °C/s to full martensite; springback is minimal but cooling-rate control drives final strength.
What is the maximum service temperature of Usibor 1500 Aluminized?
Usibor 1500 Aluminized is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Usibor 1500 Aluminized and Usibor 1500-PHS?
Aluminized is the default condition — standard supply condition for hot-stamping lines: soft enough to blank and pre-form, coating prevents scaling in the austenitizing furnace. PHS: the in-service condition of every hot-stamped part: maximum strength and intrusion resistance, but almost no ductility, no cold forming and laser trimming only. Yield strength is 400 MPa in Aluminized versus 1,100 MPa in PHS.
Can FabDigit make parts in Usibor 1500 Aluminized?
Yes — Usibor 1500 Aluminized is available for sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Usibor / press-hardenable steels for automotive body-in-white — ArcelorMittal (2023)
- EN 10083 / VDA 239-100 boron-alloyed press-hardening steel 22MnB5 — CEN / VDA (2016)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (coated steels) — ASM International (2005)
- WorldAutoSteel / Advanced High-Strength Steel Application Guidelines v7 (PHS) — WorldAutoSteel (2021)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.