Steel 22MnB5
EN 22MnB5 · GB B1500HS · also Usibor 1500, MS1500
22MnB5 (1.5528, also sold as B1500HS, Usibor 1500 and MS1500) is the industry-standard boron-manganese press-hardening sheet steel, supplied cold or hot rolled, bare or with Al-Si (AS) and zinc (GI-GA) coatings.
Values for the CR condition
22MnB5 tempers and conditions
22MnB5 is supplied in 5 conditions, soft to hard. CR is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition, used when severe cold forming, deep drawing or machining precedes austenitizing. | 330 | 500 | 28 | 145 HB | 8.5 % IACS |
CRDefault Cold rolled | Standard soft blank stock for direct hot stamping and for cold blanking/piercing before the press-hardening line. | 380 | 560 | 22 | 160 HB | — |
Hot rolled | Thicker gauges (roughly 2–6 mm) for chassis and heavy structural hot-stamped parts. | 400 | 600 | 20 | 10 HRC | 8 % IACS |
Press hardened with tailored soft zone | Local ductile zone in a hot-stamped part (heated die, tailored tempering or post-tempering) for controlled crash folding and easier joining. | 450 | 650 | 14 | 20 HRC | 8.5 % IACS |
Press hardened | The in-service condition of hot-stamped B-pillars, bumper beams and roof rails — maximum strength, minimum springback, very low ductility. | 1,100 | 1,500 | 6 | 48 HRC | — |
Supply forms, finishes and certifications
Ways 22MnB5 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
GI-GA | GI/GA | Surface finish |
AS | Al-Si (AS150/AS80) coated cold rolled, as-delivered | Coating |
What is 22MnB5?
22MnB5 (1.5528, also sold as B1500HS, Usibor 1500 and MS1500) is the industry-standard boron-manganese press-hardening sheet steel, supplied cold or hot rolled, bare or with Al-Si (AS) and zinc (GI-GA) coatings. As delivered it is soft and formable — 380 MPa yield, 560 MPa tensile, 22 % elongation, 160 HB — and is blanked, austenitized, then quenched in the die to a fully martensitic structure of about 1500 MPa tensile strength for body-in-white reinforcements. Post-hardening ductility is low, any welding softens the martensite in the heat-affected zone, and bare material has almost no corrosion resistance (score 12), so Al-Si coated stock is the default. 22MnB5 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F). 22MnB5 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 68% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
What is 22MnB5 used for?
- A- and B-pillar reinforcements
- Door-impact beams
- Roof rails and side-sill reinforcements
- Bumper beams
- Tunnel and floor cross-members
- Front and rear longitudinal rails
- Battery-box structural frames
Limitations
- Limited service temperature — 250°C (482 °F), worse than 85% of steel grades
- Poor heat conductor — 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades
22MnB5 properties
Typical room-temperature values for 22MnB5-CR; bars are the position among steel grades.
Physical3
22MnB5 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F).
Mechanical14
22MnB5 has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 68% of steel grades. Elongation at break is 22% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
22MnB5 is rated for continuous service to 250°C (482 °F). It conducts heat at 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
22MnB5 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 22MnB5 takes about 25 MJ of energy and emits 2.1 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 20%.
Manufacturability7
22MnB5's machinability is good (55/100, better than 62% of steel grades); weldability good (65/100); formability good (60/100).
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. 22MnB5 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 22MnB5
Is 22MnB5 easy to machine?
Blank, pierce and trim in the soft as-delivered state; after press hardening use laser cutting or CBN/ceramic tooling — conventional drilling and shearing of 1500 MPa martensite is impractical.
Can 22MnB5 be welded?
Resistance spot welding is standard (Al-Si coated requires adapted current/force schedules; Zn coating risks liquid-metal embrittlement); laser welding of Al-Si blanks needs coating ablation at the joint, and any welding softens the martensite in the HAZ.
Can 22MnB5 be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and hold in the water-cooled die at >27 °C/s cooling to full martensite; cold forming is limited to the soft delivered state and bend radii after hardening should be ≥3–4 t.
Manufacturability
The process limits FabDigit applies to 22MnB5. Every 22MnB5 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
Sheet metal
| Formability | Excellent60 / 100 |
|---|---|
| Weldability | Better65 / 100 |
22MnB5 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 | 0.19 – 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 |
| Cr | 0.15 – 0.35 | 0.22 |
| Alacid-soluble | 0.02 – 0.06 | 0.04 |
| Tibinds N so that B stays in solution | 0.02 – 0.05 | 0.04 |
| Bhardenability agent | 0 – 0.01 | 0 |
| N | ≤ 0.01 | 0.01 |
| Curesidual | ≤ 0.2 | 0.03 |
| Niresidual | ≤ 0.2 | 0.03 |
| Moresidual/optional | ≤ 0.1 | 0.02 |
| Fe | balance |
What surface finishes work on 22MnB5?
Al-Si coated parts go straight to phosphate-free pretreatment and e-coat; uncoated hot-stamped parts must be shot blasted to remove scale, and electroplating/acid pickling should be avoided due to hydrogen embrittlement risk.
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 22MnB5 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.552822Mn B5
- GB (China)
- B1500HS
- Trade names
- Usibor 1500MS1500
How much does 22MnB5 cost?
22MnB5 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.
22MnB5 — frequently asked
What is 22MnB5 used for?
22MnB5 is typically used for A- and B-pillar reinforcements, door-impact beams, roof rails and side-sill reinforcements, bumper beams, tunnel and floor cross-members and front and rear longitudinal rails. In short: workhorse hot-stamping boron.
What is the yield strength of 22MnB5?
22MnB5 has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 560 MPa (81.2 ksi) — weaker than 68% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is 22MnB5 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Blank, pierce and trim in the soft as-delivered state; after press hardening use laser cutting or CBN/ceramic tooling — conventional drilling and shearing of 1500 MPa martensite is impractical.
Can 22MnB5 be welded?
Yes — weldability is rated good (65/100). Resistance spot welding is standard (Al-Si coated requires adapted current/force schedules; Zn coating risks liquid-metal embrittlement); laser welding of Al-Si blanks needs coating ablation at the joint, and any welding softens the martensite in the HAZ.
What surface finishes work on 22MnB5?
Al-Si coated parts go straight to phosphate-free pretreatment and e-coat; uncoated hot-stamped parts must be shot blasted to remove scale, and electroplating/acid pickling should be avoided due to hydrogen embrittlement risk.
Can 22MnB5 be formed, bent or molded?
Direct hot stamping: austenitize 900–950 °C for 3–6 min, transfer in <10 s, form and hold in the water-cooled die at >27 °C/s cooling to full martensite; cold forming is limited to the soft delivered state and bend radii after hardening should be ≥3–4 t.
What is the maximum service temperature of 22MnB5?
22MnB5 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 22MnB5-CR and 22MnB5-PHS?
CR is the default condition — standard soft blank stock for direct hot stamping and for cold blanking/piercing before the press-hardening line. PHS: the in-service condition of hot-stamped B-pillars, bumper beams and roof rails — maximum strength, minimum springback, very low ductility. Yield strength is 380 MPa in CR versus 1,100 MPa in PHS.
How much does 22MnB5 cost?
22MnB5 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 22MnB5?
Yes — 22MnB5 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
- EN 10083-3 — Steels for quenching and tempering: alloy steels (1.5528 / 22MnB5) — CEN (2006)
- VDA 239-100 — Sheet steel for cold forming / press hardening steels — VDA (2016)
- Usibor 1500 / press hardenable steels product data — ArcelorMittal (2023)
- MBW 1500 press-hardening steel datasheet — thyssenkrupp Steel (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Hot Stamping of Ultra High Strength Steels (Karbasian & Tekkaya review data) — Elsevier / Springer (2010)
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.