Steel B1500HS · supply condition · default condition
Steel B1500HS-CR
Properties of the CR condition, compared with the other B1500HS tempers.
Standard mill supply condition for blanking and tool trials before austenitizing and press hardening.
What is B1500HS-CR?
B1500HS-CR is B1500HS supplied in the CR condition — standard mill supply condition for blanking and tool trials before austenitizing and press hardening. B1500HS-CR has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 67% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi). B1500HS-CR 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
- 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-CR properties
Typical room-temperature values for B1500HS-CR — 11 properties are specific to this condition; the rest are grade-level values shared by every B1500HS temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
B1500HS-CR 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-CR has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 67% of steel grades. Elongation at break is 17% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
B1500HS-CR 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-CR 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-CR 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-CR'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.
Other B1500HS tempers and conditions
B1500HS is also supplied in 3 other conditions. The full side-by-side table is on the B1500HS overview.
- CRDefaultStandard mill supply condition for blanking and tool trials before austenitizing and press hardening.380 MPa yield · 170 HB
- HSThe in-service condition: austenitize ~900–950 °C, form and quench in the die for ~1500 MPa crash-resistant parts.1,150 MPa yield · 48 HRC
Working with B1500HS-CR
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.
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.
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 | — |
B1500HS-CR — frequently asked
What is B1500HS-CR used for?
B1500HS-CR 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-CR?
B1500HS-CR has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 570 MPa (82.7 ksi) — weaker than 67% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is B1500HS-CR 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-CR 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-CR?
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-CR 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-CR?
B1500HS-CR 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.
Can FabDigit make parts in B1500HS-CR?
Yes — B1500HS-CR is available for sheet metal with instant online pricing. 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.