SCI 21-22 General Catalog

Technical Guidance Reference: SI Unit Conversion List

■ Basic SI Units ● Quantity as a reference of SI Quantity

● Basic unit provided with unique name and symbol (extracted) Quantity Material Symbol Frequency Hertz Hz Force Newton N Pressure and stress Pascal Pa Energy, work, and heat quantity Joule J Power and efficiency Watt W Voltage Bolt V Electrical resistance Ohm Ω

Material

Symbol

Length

Metre

m

Mass Time

Kilogram Second Ampere

kg

s

Current

A K

Temperature

Kelvin

Quantity of substance Luminous intensity

Mol

mol

Candela

cd

■ SI Prefixes ● Prefix showing integral powers of 10 combined with SI units Coefficient Material Symbol Coefficient Material Symbol Coefficient Material Symbol 10 24 Yotta Y 10 3 Kilo k 10 -9 Nano n 10 21 Zeta Z 10 2 Hecto h 10 -12 Pico p 10 18 Exa E 10 1 Deca da 10 -15 Femto f 10 15 Peta P 10 -1 Deci d 10 -18 Atto a 10 12 Tera T 10 -2 Centi c 10 -21 Zepto z 10 9 Giga G 10 -3 Milli m 10 -24 Yocto y 10 6 Mega M 10 -6 Micro μ

N

■ Principal SI Unit Conversion List (

portions are SI units)

● Force

● Stress

Pa(N/m 2 )

MPa(N/mm 2 )

kgf/mm 2

kgf/cm 2

kgf/m 2

N

kgf

1.01972 × 10 -1

-6

-7

-5

-1

1

1

1 × 10

1.01972

× 10

1.01972

× 10

1.01972

× 10

6

-1

1.01972 × 10 5

9.80665

1

1 × 10

1

1.01972

× 10

1.01972

× 10

9.80665 × 10 6

2

6

9.80665

1

1

× 10

1

× 10

9.80665 × 10 4

-2

-2

4

9.80665

× 10

1

× 10

1

1

× 10

9.80665 × 10 -6

-6

- 4

9.80665

1

× 10

1

× 10

1

● Pressure

1Pa = 1N/m 2 , 1MPa = 1N/mm 2

Pa(N/m 2 )

kgf/cm 2

kPa

MPa

GPa

bar

mmHg or Torr

-3

-6

-9

-5

-5

-3

1

1 × 10

1

× 10

1

× 10

1

× 10

1.01972

× 10

7.50062

× 10

3

-3

-6

-2

-2

1 × 10

1

1

× 10

1

× 10

1

× 10

1.01972

× 10

7.50062

6

3

-3

7.50062 × 10 3

1 × 10

1

× 10

1

1

× 10

1

× 10

1.01972 × 10

9

6

3

4

4

6

1 × 10

1

× 10

1

× 10

1

1

× 10

1.01972

× 10

7.50062

× 10

5

2

-1

-4

2

1 × 10

1

× 10

1

× 10

1

× 10

1

1.01972

7.50062

× 10

9.80665 × 10 4

9.80665 × 10 -2

-5

-1

2

9.80665

× 10

9.80665

× 10

9.80665

× 10

1

7.35559

× 10

1.33322 × 10 2

-1

-4

-7

-3

-3

1.33322

× 10

1.33322

× 10

1.33322

× 10

1.33322

× 10

1.35951

× 10

1

1Pa = 1N/m 2

● Work / Energy / Heat Quantity J kW·h

kgf·m

kcal

2.77778 × 10 -7

-1

-4

1

1.01972

× 10

2.38889

× 10

3.60000 × 10 6

5

2

1

3.67098

× 10

8.60000

× 10

2.72407 × 10 -6

-3

9.80665

1

2.34270

× 10

4.18605 × 10 3

-3

2

1.16279

× 10

4.26858

× 10

1

1J=1W/s,1J=1N/m

● Power (efficiency and motive energy) / Thermal flow W kgf·m/s PS

kcal/h

1.01972 × 10 -1

-3

-1

1

1.35962

× 10

8.60000

× 10

3

2

2

1 × 10

1.01972

× 10

1.35962

8.60000

× 10

1.33333 × 10 -2

9.80665

1

8.43371

7.355 × 10 2

6.32529 × 10 2

7.5

× 10

1

1.18572 × 10 -1

-3

1.16279

1.58095

× 10

1

1W = 1J/s, PS: Horsepower

● Specific Heat

● Thermal Conductivity

● Spindle Speed

1kcal (kg/°C) cal/ (g/°C)

min -1

J/(kg·K)

W/(m/K)

kcal/(h·m·°C)

rpm

2.38889 × 10 -4

8.60000 × 10 -1

1

1

1

1

N69

4.18605 × 10 3

1min -1 =1rpm

1

1.16279

1

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