Steel B1500HS
B1500HS is a proprietary boron-manganese hot-stamping steel supplied in a soft, formable condition (380 MPa yield, 570 MPa tensile, 17% elongation, about 170 HB / 87 HRB) and press-hardened in the die to roughly 1500 MPa tensile strength in the finished part.
Values for the CR condition
B1500HS tempers and conditions
B1500HS is supplied in 4 conditions, soft to hard. CR is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefault Cold rolled | Standard mill supply condition for blanking and tool trials before austenitizing and press hardening. | 380 | 570 | 17 | 170 HB | — |
Cold rolled with Al-Si (AlSi10Fe3) hot-dip coating, as-delivered | Pick when blanks must be austenitized in air without scale — the Al-Si layer prevents oxidation and needs no post-shot-blasting. | 380 | 570 | 16 | 170 HB | 8 % IACS |
Hot stamped with tailored soft zone | Choose for tailored B-pillars where a ductile bainite/ferrite zone must absorb energy or allow local joining. | 500 | 750 | 13 | 22 HRC | 7.5 % IACS |
Hot stamped / press hardened | The in-service condition: austenitize ~900–950 °C, form and quench in the die for ~1500 MPa crash-resistant parts. | 1,150 | 1,550 | 6 | 48 HRC | 30 W/m·K |
What is B1500HS?
B1500HS is a proprietary boron-manganese hot-stamping steel supplied in a soft, formable condition (380 MPa yield, 570 MPa tensile, 17% elongation, about 170 HB / 87 HRB) and press-hardened in the die to roughly 1500 MPa tensile strength in the finished part. It is used to cut mass from safety-critical body structures and is available as bare cold-rolled coil, Al-Si coated coil (CR-AS) and hot-stamped or hot-stamped and shot-blasted parts (HS, HS-SZ). Final geometry can only be produced by hot stamping with die quenching, post-hardening ductility is low, and bare material has the corrosion resistance of plain carbon steel. Cold-formed martensitic sheet such as MS1500 is the alternative where no hot-stamping line is available. B1500HS 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). B1500HS has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 68% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi).
What is B1500HS used for?
- A- and B-pillar reinforcements
- Door impact beams
- Bumper beams
- Roof rails and roof bows
- Tunnel and sill reinforcements
- Front and rear crash boxes
- Seat cross members
Advantages
- Forms and bends easily — 65/100, better than 81% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
- Poor heat conductor — 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 77% of steel grades
B1500HS properties
Typical room-temperature values for B1500HS-CR; bars are the position among steel grades.
Physical3
B1500HS 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
B1500HS has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 68% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
B1500HS 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
B1500HS conducts electricity at 8 % IACS, better than 55% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of B1500HS takes about 32 MJ of energy and emits 2.3 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 20%.
Manufacturability7
B1500HS's machinability is good (55/100, better than 62% of steel grades); weldability very good (70/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. B1500HS is highlighted; hover a dot for its name, or open the interactive family chart.
Working with B1500HS
Is B1500HS easy to machine?
Soft CR condition machines like ordinary C-Mn sheet; after press hardening (≈480 HV) use laser cutting or CBN/carbide with rigid setups — mechanical trimming causes rapid tool wear and edge cracking.
Can B1500HS be welded?
Resistance spot welding is the production route (Al-Si coating needs higher current/longer weld time); avoid heat inputs that temper the martensite and watch HAZ softening in laser welding.
Can B1500HS be formed, bent or molded?
Cold form only in the as-delivered state; final geometry is made by hot stamping at 900–950 °C austenitizing with die quench at >27 °C/s cooling for full martensite.
Manufacturability
The process limits FabDigit applies to B1500HS. Every B1500HS part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
Sheet metal
| Formability | Excellent65 / 100 |
|---|---|
| Weldability | Better70 / 100 |
B1500HS 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 |
|---|---|---|
| C | 0.2 – 0.25 | 0.23 |
| Si | 0.15 – 0.35 | 0.25 |
| Mn | 1.1 – 1.4 | 1.25 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.01 | 0 |
| Crhardenability | 0.15 – 0.35 | 0.22 |
| Aldeoxidation | 0.02 – 0.06 | 0.04 |
| Tifixes N to protect boron | 0.02 – 0.05 | 0.04 |
| B | 0 – 0.01 | 0 |
| N | ≤ 0.01 | 0.01 |
| Fe | balance |
What surface finishes work on B1500HS?
Al-Si coated parts go straight to phosphate-free pretreatment and cathodic e-coat; bare hot-stamped parts must be shot-blasted to remove scale then coated, and delayed hydrogen cracking risk limits acid pickling and electroplating.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Plating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel B1500HS in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Also called
- 22MnB5
How much does B1500HS cost?
B1500HS is a standard-cost steel ($$), cheaper than about 61% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
B1500HS — frequently asked
What is B1500HS used for?
B1500HS is typically used for A- and B-pillar reinforcements, door impact beams, bumper beams, roof rails and roof bows, tunnel and sill reinforcements and front and rear crash boxes. In short: hot-stamping boron sheet.
What is the yield strength of B1500HS?
B1500HS has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 68% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is B1500HS easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Soft CR condition machines like ordinary C-Mn sheet; after press hardening (≈480 HV) use laser cutting or CBN/carbide with rigid setups — mechanical trimming causes rapid tool wear and edge cracking.
Can B1500HS be welded?
Yes — weldability is rated very good (70/100). Resistance spot welding is the production route (Al-Si coating needs higher current/longer weld time); avoid heat inputs that temper the martensite and watch HAZ softening in laser welding.
What surface finishes work on B1500HS?
Al-Si coated parts go straight to phosphate-free pretreatment and cathodic e-coat; bare hot-stamped parts must be shot-blasted to remove scale then coated, and delayed hydrogen cracking risk limits acid pickling and electroplating.
Can B1500HS be formed, bent or molded?
Cold form only in the as-delivered state; final geometry is made by hot stamping at 900–950 °C austenitizing with die quench at >27 °C/s cooling for full martensite.
What is the maximum service temperature of B1500HS?
B1500HS 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 B1500HS-CR and B1500HS-HS?
CR is the default condition — standard mill supply condition for blanking and tool trials before austenitizing and press hardening. HS: the in-service condition: austenitize ~900–950 °C, form and quench in the die for ~1500 MPa crash-resistant parts. Yield strength is 380 MPa in CR versus 1,150 MPa in HS.
How much does B1500HS cost?
B1500HS is a standard-cost steel ($$), cheaper than about 61% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Can FabDigit make parts in B1500HS?
Yes — B1500HS is available for sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Hot Stamping of Ultra High Strength Steels (press hardening 22MnB5 data) — Springer (2021)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.