Annealing metals and metal products for the trade · Illinois

Diamond Heat Treat

Rockford, IL · ~47 workers · 2 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
5.1
Avg TCR
3.3
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Diamond Heat Treat runs at 156% of its industry's injury rate - more dangerous than the typical Annealing metals and metal products for the trade workplace, earning a grade D.

Diamond Heat Treat: 5.1 TCR = 156% of Annealing metals and metal products for the trade BLS 3.3 · 2y Form 300A (see methodology below)

Diamond Heat Treat safety composite

Diamond Heat Treat scores strongest on dart rate (safer than 79% of same-industry peers) and weakest on total case rate (tcr) (safer than 38%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

56/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 5.14 per 100 workers

Safer than 38% of industry peers

DART rate
B 0 per 100 workers

Safer than 79% of industry peers

Fatalities
D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Rising injury rate

Diamond Heat Treat: 4.7 → 5.6 TCR

Peak year 2023 @ 5.6 TCR · DART/TCR 0× in 2023

Diamond Heat Treat's TCR rose 0.9 from 4.7 in 2022 to 5.6 in 2023. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 332811 · Rockford, IL ABOVE-IND · SMALL

Grade D · TCR 5.1 · 156% of ind

  • DART 0.0 DART
  • RANK #17/24
  • PHOTO Bodycote Thermal Pro…
  • BOOK 2y book
  • INJ 4 inj
  • SIZE ~47 FTE

Nearest TCR peer: Bodycote Thermal Processing Inc - Melrose Park (0.0 TCR gap)

Read with this employer → · Industry book → · Illinois employers → · Look up another →

Diamond Heat Treat in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Diamond Heat Treat averages 5.1 TCR (156% of the Annealing metals and metal products for the trade BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Diamond Heat Treat TCR series: 2022=4.7 · 2023=5.6 · BLS 3.3

Where Diamond Heat Treat falls in its industry

248 Annealing metals and metal pro establishments

Safer than 38% of graded establishments in this industry, whose median TCR is 4.2.

More dangerous than peersSafer than peers

Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #17 safest of 24 Annealing metals and metal pro employers in Illinois.

Diamond Heat Treat (47 employees, TCR 5.1) among 29 same-industry peers, split at the industry median of 38 employees and a TCR of 4.2 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 05001,0001,5002,000 051015 Average employees Total Case Rate Diamond Heat Treat
Diamond Heat Treat (47 employees, TCR 5.1) among 29 same-industry peers, split at the industry median of 38 employees and a TCR of 4.2

Diamond Heat Treat has more employees than the Annealing metals and metal products for median and a higher injury rate than the industry's median TCR of 4.2. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2023 5.6 0.0 2 0 0
2022 4.7 0.0 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

332811 · IL · Rockford

248 Annealing metals and metal products for the trade employers nationwide with a credible TCR · 22,804 rated employers in Illinois with headcount on file · 405 employers in Rockford, IL · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Bodycote Thermal Processing Inc - Melrose Park 5.1 TCR
NAICS-TCR MPC 5.2 TCR
NAICS-TCR Turbocam Dover 5.2 TCR
NAICS-TCR Bodycote Thermal Processing, Inc. - Greensburg 5.2 TCR
STATE-SIZE 1987-Jerseyville, IL (Monsanto Co.) 47 FTE
STATE-SIZE Stonington, IL-Mfg 47 FTE
STATE-SIZE Prairie Power, Inc. 47 FTE
STATE-SIZE AMEREN ILLINOIS - Distribution Operating - Decatur 47 FTE
CITY-NEAR ILRKF - ROCKFORD AIR HUB 2,634 FTE
CITY-NEAR Swedish American Hospital - 4800 2,629 FTE
CITY-NEAR PCI Pharma Services Rockford 2,175 FTE
CITY-NEAR SwedishAmerican Hospital 1,855 FTE
NAT-TCR Don Sanderson Ford Inc 5.1 TCR
NAT-TCR Big Lots Store #1961 Rock Hill, SC 5.1 TCR
NAT-TCR Graphic Controls Acquisition Corp 5.1 TCR
NAT-TCR Michcor Container 5.1 TCR
NAT-SIZE Bluestem Arkansas LLC 47 FTE
NAT-SIZE Norwesco - St. Bonifacius 47 FTE
NAT-SIZE Studio Designs, Inc 47 FTE
NAT-SIZE Modern Candles Co Inc 47 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2023, 2022. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.